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V1.h5 (128.44 MB)

sub-012 V1 h5 file

Version 2 2017-08-27, 08:23

Version 1 2017-08-17, 15:24

dataset

posted on 2017-08-27, 08:23 authored by Tomas KnapenTomas Knapen

Data file contains data for expanded V1 region. Data types are

1. per-voxel percent signal change time-courses for 6 runs

2. per-voxel percent signal change time-courses for 6 runs, leave-one-out median - name of the array refers to the file that was left out

3. per-voxel percent signal change time-course, grand average over runs (median)

4. parameters of pRF fits per run (leave-one-out)

5. parameters of pRF fits all runs

6. design matrix of the experiment, [100,100,462] = pixels by pixels by time points, i.e. this constitutes a binary movie of what was on the screen on each sample point in the data.

# indices into prf output array:

# 0: X (position, degrees of visual angle from fixation)

# 1: Y (position, degrees of visual angle from fixation)

# 2: s (size, standard deviation of gauss)

# 3: n (nonlinearity power)

# 4: a (amplitude)

# 5: b (baseline, intercept value)

# 6: rsq

# 7:

Github repo for analysis code on this dataset: https://github.com/tknapen/decode_encode

The voxel size of these recordings is 2mm isotropic, and the sample duration (TR) is 0.945 s. pRF fits were done using a CSS model implemented in Popeye, using a standard HRF shape.