Additions:
[[http://psychtoolbox-3.googlecode.com/svn/trunk/Psychtoolbox/PsychDocumentation/Psychtoolbox3-Slides.pdf Talk slides of Psychtoolbox presentation, given at ECVP 2007 Arezzo]]
Deletions:
Additions:
[[http://svn.berlios.de/viewvc/osxptb/trunk/Psychtoolbox/PsychDocumentation/Psychtoolbox3-Slides.pdf Talk slides of Psychtoolbox presentation, given at ECVP 2007 Arezzo]]
Deletions:
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has over 1500 members and about 4 messages a day. Principal investigators and their collaborators have identified at least 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. We know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it, and according to Google scholar, over 3200 articles cite it.
Deletions:
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has over 1500 members and about 4 messages a day. Principal investigators and their collaborators have identified at least 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
Additions:
The attraction of using computer displays for visual psychophysics is that they allow software specification of the stimulus. Programs to run experiments are often written in a low-level language (e.g. C or Pascal) to achieve full control of the hardware for precise stimulus display. Although these low-level languages provide power and flexibility, they are not conducive to rapid program development. Interpreted languages (e.g. BASIC, LISP, Mathematica, and Matlab) are abstracted from hardware details and provide friendlier development environments, but don't provide the hardware control needed for precise stimulus display. The Psychophysics Toolbox is a software package that adds this capability to the Matlab and Octave application on Macintosh, Linux and Windows computers (we will only mention Matlab for the remainder of this text, but statements mostly apply to Octave as well).
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has over 1379 members and about 4 messages a day. Principal investigators and their collaborators have identified at least 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has over 1379 members and about 4 messages a day. Principal investigators and their collaborators have identified at least 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Revision [1262]
Edited on 2007-09-21 22:31:07 by MarioKleiner [Added link to PTB ECVP 2007 slides...]Additions:
Click the following link to download a PDF file with the slides of a presentation (held at ECVP 2007 in Arezzo by Mario Kleiner). These slides will give you a quick overview about the new features of Psychtoolbox-3 and differences to the old Psychtoolbox-2:
[[http://svn.berlios.de/viewcvs/*checkout*/osxptb/trunk/Psychtoolbox/PsychDocumentation/Psychtoolbox3-Slides.pdf Talk slides of Psychtoolbox presentation, given at ECVP 2007 Arezzo]]
[[http://svn.berlios.de/viewcvs/*checkout*/osxptb/trunk/Psychtoolbox/PsychDocumentation/Psychtoolbox3-Slides.pdf Talk slides of Psychtoolbox presentation, given at ECVP 2007 Arezzo]]
Additions:
The Matlab & Psychtoolbox environment is flexible yet relatively easy to learn. Canned experimental programs fail because they usually can't do a really new experiment. For that you need the expressive scope of a full-fledged computer language, such as ""C"" or Matlab. Matlab is a particularly good language for running laboratory experiments. Even for experienced programmers, three features of Matlab greatly speed the development cycle over other languages. Matlab has a rich library of high-level functions available to do math and plotting. It operates on arrays and images as named variables. And it is interactive, so that one can type 1+1 and immediately see the answer 2, which is invaluable when developing laboratory software to run experiments.
Brand-new users who've never programmed before will find that they're learning three things when they start using the toolbox: Matlab, how to create stimuli and measure responses, and how to organize an experiment. There's almost no overlap between those three topics. The included demos illustrate how many common tasks may be accomplished (type ""help PsychDemos""). For learning the language, many people say they liked the Matlab manual. Others skipped the manual and learned by trial and error. Everyone uses Matlab's help feature frequently. It's one of Matlab's best features and we have tried to follow their conventions with the toolbox routines.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Good luck programming.
Mario Kleiner, David Brainard, Denis Pelli, Chris Broussard, and Roy Han
[[CurrentActiveDevelopers The Developers]]
{{parseptblog}}
Brand-new users who've never programmed before will find that they're learning three things when they start using the toolbox: Matlab, how to create stimuli and measure responses, and how to organize an experiment. There's almost no overlap between those three topics. The included demos illustrate how many common tasks may be accomplished (type ""help PsychDemos""). For learning the language, many people say they liked the Matlab manual. Others skipped the manual and learned by trial and error. Everyone uses Matlab's help feature frequently. It's one of Matlab's best features and we have tried to follow their conventions with the toolbox routines.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Good luck programming.
Mario Kleiner, David Brainard, Denis Pelli, Chris Broussard, and Roy Han
[[CurrentActiveDevelopers The Developers]]
{{parseptblog}}
Deletions:
Additions:
The Matlab
Deletions:
Brand-new users who've never programmed before will find that they're learning three things when they start using the toolbox: Matlab, how to create stimuli and measure responses, and how to organize an experiment. There's almost no overlap between those three topics. The included demos illustrate how many common tasks may be accomplished (type ""help PsychDemos""). For learning the language, many people say they liked the Matlab manual. Others skipped the manual and learned by trial and error. Everyone uses Matlab's help feature frequently. It's one of Matlab's best features and we have tried to follow their conventions with the toolbox routines.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Good luck programming.
Mario Kleiner, David Brainard, Denis Pelli, Chris Broussard, and Roy Han
[[CurrentActiveDevelopers The Developers]]
{{parseptblog}}
Additions:
The Matlab & Psychtoolbox environment is flexible yet relatively easy to learn. Canned experimental programs fail because they usually can't do a really new experiment. For that you need the expressive scope of a full-fledged computer language, such as ""C"" or Matlab. Matlab is a particularly good language for running laboratory experiments. Even for experienced programmers, three features of Matlab greatly speed the development cycle over other languages. Matlab has a rich library of high-level functions available to do math and plotting. It operates on arrays and images as named variables. And it is interactive, so that one can type 1+1 and immediately see the answer 2, which is invaluable when developing laboratory software to run experiments.
Brand-new users who've never programmed before will find that they're learning three things when they start using the toolbox: Matlab, how to create stimuli and measure responses, and how to organize an experiment. There's almost no overlap between those three topics. The included demos illustrate how many common tasks may be accomplished (type ""help PsychDemos""). For learning the language, many people say they liked the Matlab manual. Others skipped the manual and learned by trial and error. Everyone uses Matlab's help feature frequently. It's one of Matlab's best features and we have tried to follow their conventions with the toolbox routines.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Good luck programming.
Mario Kleiner, David Brainard, Denis Pelli, Chris Broussard, and Roy Han
[[CurrentActiveDevelopers The Developers]]
{{parseptblog}}
Brand-new users who've never programmed before will find that they're learning three things when they start using the toolbox: Matlab, how to create stimuli and measure responses, and how to organize an experiment. There's almost no overlap between those three topics. The included demos illustrate how many common tasks may be accomplished (type ""help PsychDemos""). For learning the language, many people say they liked the Matlab manual. Others skipped the manual and learned by trial and error. Everyone uses Matlab's help feature frequently. It's one of Matlab's best features and we have tried to follow their conventions with the toolbox routines.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Good luck programming.
Mario Kleiner, David Brainard, Denis Pelli, Chris Broussard, and Roy Han
[[CurrentActiveDevelopers The Developers]]
{{parseptblog}}
Deletions:
Additions:
The Matlab
Deletions:
Brand-new users who've never programmed before will find that they're learning three things when they start using the toolbox: Matlab, how to create stimuli and measure responses, and how to organize an experiment. There's almost no overlap between those three topics. The included demos illustrate how many common tasks may be accomplished (type ""help PsychDemos""). For learning the language, many people say they liked the Matlab manual. Others skipped the manual and learned by trial and error. Everyone uses Matlab's help feature frequently. It's one of Matlab's best features and we have tried to follow their conventions with the toolbox routines.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Good luck programming.
Mario Kleiner, David Brainard, Denis Pelli, Chris Broussard, and Roy Han
[[CurrentActiveDevelopers The Developers]]
{{parseptblog}}
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thirty thousand times: 24,324 Windows and 8,743 Mac OS 9. Psychtoolbox-3 for Mac OSX was downloaded 1,832 times before 22 September 2006. The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, early Mac OS X versions of PTB-3 before 22 September 2006, 1832 times). The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. The Psychtoolbox [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, early Mac OS X versions of PTB-3 before 22 September 2006, 1832 times). The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And we know of 404 papers that [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X versions of PTB-3 before 22 September 2006, 1832 times). The current count, since 22 September 2006, of registered unique installations of Psychtoolbox-3 appears below. Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X versions of PTB-3, 1832 times). The current count of registered unique installations of Psychtoolbox-3 appears below. Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X versions of PTB-3, 1832 times). Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it. The current count of registered unique installations of Psychtoolbox-3 appears below.
Deletions:
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X versions of PTB-3, 1832 times). Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it. The current number of registered unique installations of Psychtoolbox-3 appears below.
Deletions:
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22 September 2006. They are a lower bound on the real number of installations, because our still-slightly-buggy counting scripts occasionally miss a few.
Additions:
The Matlab & Psychtoolbox environment is flexible yet relatively easy to learn. Canned experimental programs fail because they usually can't do a really new experiment. For that you need the expressive scope of a full-fledged computer language, such as ""C"" or Matlab. Matlab is a particularly good language for running laboratory experiments. Even for experienced programmers, three features of Matlab greatly speed the development cycle over other languages. Matlab has a rich library of high-level functions available to do math and plotting. It operates on arrays and images as named variables. And it is interactive, so that one can type 1+1 and immediately see the answer 2, which is invaluable when developing laboratory software to run experiments.
Deletions:
Additions:
Mario Kleiner, David Brainard, Denis Pelli, Chris Broussard, and Roy Han
Deletions:
Additions:
[[CurrentActiveDevelopers The Developers]]
Deletions:
Additions:
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22 September 2006. They are a lower bound on the real number of installations, because our still-slightly-buggy counting scripts occasionally miss a few.
Good luck programming.
Mario Kleiner, Chris Broussard, David Brainard, and Denis Pelli
[[PsychtoolboxCredits The Developers]]
Good luck programming.
Mario Kleiner, Chris Broussard, David Brainard, and Denis Pelli
[[PsychtoolboxCredits The Developers]]
Deletions:
Additions:
The Matlab & Psychtoolbox environment is flexible yet relatively easy to learn. Canned experimental programs fail because they usually can't do a really new experiment. For that you need the expressive scope of a full-fledged computer language, such as ""C"" or Matlab. Matlab is a particularly good language for running laboratory experiments. Even for experienced programmers, three features of Matlab greatly speed the development cycle over other languages. Matlab has a rich library of high-level functions available to do math and plotting. It operates on arrays and images as named variables. And it is interactive, so that one can type "1+1" and immediately see the answer "2". This last feature is invaluable when developing laboratory software to run experiments.
Deletions:
Additions:
The Matlab & Psychtoolbox environment is flexible, yet relatively easy to learn. Canned experimental programs fail because they usually can't do a really new experiment. For that you need the expressive scope of a full-fledged computer language, such as ""C"" or Matlab. Matlab is a particularly good language for running laboratory experiments. Even for experienced programmers, Matlab greatly speeds the development cycle over other languages, in three ways. Matlab has a rich library of high-level functions available to do math and plotting. It operates on arrays and images as named variables. And it is interactive, so that one can type "1+1" and immediately see the answer "2". This last feature is invaluable when developing laboratory software to run experiments.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X versions of PTB-3, 1832 times). Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22 September 2006. They are a lower bound on the real number of installations, because our still-slightly-buggy counting scripts occasionally miss a few:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X versions of PTB-3, 1832 times). Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22 September 2006. They are a lower bound on the real number of installations, because our still-slightly-buggy counting scripts occasionally miss a few:
Deletions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X only versions of PTB-3, 1832 times). Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22 September 2006. They are a lower bound on the real number of installations, because our counting scripts still have little bugs, so we occasionally miss a few:
Additions:
The Matlab & Psychtoolbox environment is flexible, yet relatively easy to learn. Canned experimental programs fail because they usually can't do a really new experiment. For that you need the expressive scope of a full-fledged computer language, such as ""C"" or Matlab. Matlab is a particularly good language. Even for experienced programmers, Matlab greatly speeds the development cycle over other languages, for three reasons. Matlab has a rich library of high-level functions available to do math and plotting. It operates on arrays and images as named variables. And it is interactive, so that one can type "1+1" and immediately see the answer "2". This last feature is invaluable when developing laboratory software to run experiments.
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22 September 2006. They are a lower bound on the real number of installations, because our counting scripts still have little bugs, so we occasionally miss a few:
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22 September 2006. They are a lower bound on the real number of installations, because our counting scripts still have little bugs, so we occasionally miss a few:
Deletions:
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22. September 2006. They are a lower bound on the real number of installations, because our counting scripts still have little bugs, so sometimes the counting doesn't work:
Additions:
The MATLAB & Psychtoolbox environment is flexible, yet relatively easy to learn. In our view, canned experimental programs fail because they usually can't do a really new experiment. That problem is solved by writing in ""C++"" or some similar language, but it takes a long time for a new user to come up to speed. And we have found that even for experienced programmers, working in a high-level language greatly speeds the development cycle.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X only versions of PTB-3, 1832 times). Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X only versions of PTB-3, 1832 times). Its [[PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X only versions of PTB-3, 1832 times). Its [[http://psychtoolbox.org/wikka.php?wakka=PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Additions:
The Psychtoolbox is popular. As of October 2006, Psychtoolbox-2 has been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, Early Mac OS X only versions of PTB-3, 1832 times). Its [[http://psychtoolbox.org/wikka.php?wakka=PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22. September 2006. They are a lower bound on the real number of installations, because our counting scripts still have little bugs, so sometimes the counting doesn't work:
{{parseptblog}}
You can see the current number of registered unique installations of Psychtoolbox-3 below. These numbers are automatically updated, based on our online counting and cover most downloads and updates since the counting started at 22. September 2006. They are a lower bound on the real number of installations, because our counting scripts still have little bugs, so sometimes the counting doesn't work:
{{parseptblog}}
Deletions:
Additions:
The Psychtoolbox is popular. It's been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, 1832 Mac OS X). Its [[http://psychtoolbox.org/wikka.php?wakka=PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-3/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
Additions:
The Psychtoolbox is popular. It's been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, 1832 Mac OS X). Its [[http://psychtoolbox.org/wikka.php?wakka=PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-4/grants.html grant]]-supported projects that use it. And at least 404 papers [[http://psychtoolbox.org/PTB-3/citations.html cite]] it.
Deletions:
Additions:
The Psychtoolbox is popular. It's been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, 1832 Mac OS X). Its [[http://psychtoolbox.org/wikka.php?wakka=PsychtoolboxForum forum]] has 820 members and about 4 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-2/grants.html grant]]-supported projects that use it. And 404 papers [[http://psychtoolbox.org/PTB-2/citations.html cite]] it.
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The Psychtoolbox is popular. It's been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, 1832 Mac OS X). Its [[http://psychtoolbox.org/wikka.php?wakka=PsychtoolboxForum forum]] is active, averaging more than 3 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-2/grants.html grant]]-supported projects that use it. And 404 papers [[http://psychtoolbox.org/PTB-2/citations.html cite]] it.
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The Psychtoolbox is popular. It's been downloaded thousands of times (24324 Windows, 8743 Mac OS 9, 1832 Mac OS X). Its forum is active, averaging more than 3 messages a day. Principal investigators and their collaborators have identified 127 [[http://psychtoolbox.org/PTB-2/grants.html grant]]-supported projects that use it. And 404 papers [[http://psychtoolbox.org/PTB-2/citations.html cite]] it.
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=== [[http://psychtoolbox.org Psychtoolbox-3]] Overview ===
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Brand-new users who've never programmed before will find that they're learning three things when they start using the toolbox: Matlab, how to create stimuli and measure responses, and how to organize an experiment. There's almost no overlap between those three topics. The included demos illustrate how many common tasks may be accomplished (type ""help PsychDemos""). For learning the language, many people say they liked the Matlab manual. Others skipped the manual and learned by trial and error. Everyone uses Matlab's help feature frequently. It's one of Matlab's best features and we have tried to follow their conventions with the toolbox routines.
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An attraction of the Matlab/Toolbox environment is that it is flexible, yet relatively easy to learn. In our view, canned experimental programs fail because they usually can't do a really new experiment. That problem is solved by writing in ""C++"" or some similar language, but it takes a long time for a new user to come up to speed. And we have found that even for experienced programmers, working in a high-level language greatly speeds the development cycle.
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Matlab is a high-level interpreted language with extensive support for numerical calculations. The Psychophysics Toolbox interfaces between Matlab and the computer hardware. The Psychtoolbox's core routines provide access to the display frame buffer and color lookup table, allow synchronization with the vertical retrace, support millisecond timing, allow access to ""OpenGL"" commands, and facilitate the collection of observer responses. Ancillary routines support common needs like color space transformations and the QUEST threshold seeking algorithm.
