grating stimuli parameters for pvc-8

Hi and thanks for the dataset

I wanted to know if the parameters for the grating stimuli are available. What I mean is a structure in which for each grating stimuli, its orientation, spatial frequency, and temporal frequency is specified.

thanks in advance

Hi Faraz

thank you for your interest. You are right that information is scattered through the file "main_LoadAndParse". So here it is in a more compact form, with Matlab notation. 

Please let me know if you have any other questions.

Best 

Ruben

- Temporal frequency: these are static gratings

- Gratings for Spatial Frequency tuning 

tmp = squeeze(resp(:,[1:128]+(2*9*30),); % gratings for spatial frequency tuning
resp_sf = reshape(tmp,size(tmp,1),4,4,8,reps); % [#neurons #phases #orientations #s.f. #repeats]
%%% phase = [0:90:270] degrees
%%% ori = [90:-45:-45] degrees
%%% s.f. = 2.^[-2:.7:3.5] cycles/deg
%%% diameter = 1 degree

- Gratings for Orientation tuning 

tmp = squeeze(resp(:,[1:64]+(128+2*9*30),); % gratings for orientation tuning

resp_ori = reshape(tmp,size(tmp,1),4,16,reps); % [#neurons #phases #orientations #repeats]

%%% phase = [0:90:270] degrees

%%% ori = [90:-11.25:-78.75] degrees
%%% s.f. = 1 cycles/deg
%%% diameter = 1 degree

- Gratings for Size tuning 

tmp = squeeze(resp(:,[1:224]+(64+128+2*9*30),); % gratings for size tuning
resp_as = reshape(tmp,size(tmp,1),4,2,7,4,reps); % [#neurons #phases #categories #sizes #orientations #repeats]
%%% phase = [0:90:270] degrees
%%% categories: 1=circular patch of grating; 2= annulus (size is inner diameter)
%%% diameter = round(2.^[-1.56:.7:2.64]) degrees
%%% ori = [90:-45:-45] degrees
%%% s.f. = 1 cycles/deg

Thank you a lot for your help.