https://github.com/janfreyberg/saturation-ssvep

Scripts to measure the SSVEP response to stimuli of varying contrast
https://github.com/janfreyberg/saturation-ssvep

Last synced: about 2 months ago
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Scripts to measure the SSVEP response to stimuli of varying contrast

• Host: GitHub
• URL: https://github.com/janfreyberg/saturation-ssvep
• Owner: janfreyberg
• Created: 2015-11-04T13:15:49.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2015-11-05T14:20:50.000Z (about 9 years ago)
• Last Synced: 2024-10-12T15:53:55.649Z (3 months ago)
• Language: Matlab
• Size: 172 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# saturation-ssvep

Scripts to measure the SSVEP response to stimuli of varying contrast

Runs through a few "training" trials (demos), then runs randomised ssvep trials of different contrasts.

- Specify the desired contrast by editing `contrasts`

- Specify trial number & length by editing `nrep` and `trialdur`

- Change the target frequency by adjusting `t_frames` (achieved frequency will be your monitor frequency/`t_frames`)

- Change stimulus size and spatial frequency by adjusting `stimsize` and `cycperdeg`

To make sure the computer is sending the right triggers to your EEG setup, make sure to take a look at any line containing the function `outp`

The functions `config_io` and `outp` come from here:

http://apps.usd.edu/coglab/psyc770/IO32.html

Everything else should be the psychtoolbox, matlab, or by basic functions repository