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DOI

A collection of pRF scripts. The code was used for the pRF-mapping in:

  • Ekman, Kok & de Lange (2017). Time-compressed preplay of anticipated events in human primary visual cortex. Nature Communications. 8, 15276 doi: 10.1038/ncomms15276 https://www.nature.com/articles/ncomms15276

  • Ekman, Roelfsema & de Lange (in prep). Object selection by automatic spreading of top-down attentional signals in V1.

Stimulus code

Matlab scripts originally developed by Dumoulin & Wandell 2008 NeuroImage. Please note that these scripts were written in 2013 and a newer version is available here. If you're starting from scratch, that might be is a better place to look.

  • the stimulus scripts require Matlab (tested with matlab2011b) and Psychtoolbox3.
  • start the menu with run('ret_initialise.m').
  • choose "Translating Bars 8 pass (Dumoulin)" and load your scanner calibration (e.g. "Siemens Skyra"). Note that you can create your own calibration; have a look at /MRstim/Displays/Skyra/displayParams.m for an example.
  • stimulus presentation will start with the first MRI trigger.

We run 4 blocks (stimulation in each block is identical), but more blocks are always better.

Analysis code

The analysis is based on MrVista and requires SPM8; other SPM versions might work as well.

  • Preprocessing SPM/FSL
  • ... #TODO

Citing

If you use these scripts please consider citing the following articles:

Dumoulin & Wandell (2008). Population receptive field estimates in human visual
cortex. Neuroimage 39, 647–660. http://www.sciencedirect.com/science/article/pii/S1053811907008269

Ekman, Kok & de Lange (2017). Time-compressed preplay of anticipated events in
human primary visual cortex. *Nature Communications*. 8, 15276
doi: 10.1038/ncomms15276 https://www.nature.com/articles/ncomms15276

Related

analyzepRF, popeye, samprf