Semantic_Decoding_2017

MDS plot of semantic model and fNIRS datacompanion software to our paper in Neurophotonics

View the Project on GitHub TeamMCPA/Semantic_Decoding_2017

Download the paper (PDF):

Download supplemental analyses (PDF):

Decoding semantic representations from fNIRS signals

Hosted by TeamMCPA on Github

Software for performing representational similarity analysis (RSA)-based decoding on fNIRS data. Demonstrated by Zinszer, Bayet, Emberson, Raizada, & Aslin (2018) in Neurophotonics.

Analyses for each experiment have their own demo scripts: (commentary provided within)

Semantic_8class_Neurophotonics_Exp1_30June2017.m Semantic_8class_Neurophotonics_Exp2_botharrays_30June2017.m Semantic_8class_Neurophotonics_Exp2_latlarray_30June2017.m Semantic_8class_Neurophotonics_Exp2_postarray_30June2017.m

The demo script relies on several support functions also included in this repository. fNIRS data are also included in the repository, but you should be able to run this script over your own data with minor modifications.

Permutation-based significance testing is included at the end of each script. This code can take a long time (several hours) to run, depending on the number of permutations performed. To find the results of each analysis and the saved output of the permutation tests we ran, look in the directory “analysis_results” and load the .mat file.

See also our initial poster presentatation at SfNIRS 2016: http://benjaminz.com/SfNIRS-2016-demo/

Please see Emberson, Zinszer, Raizada, & Aslin (2016) regarding Multivariate Pattern Analysis for fNIRS.

Please see Anderson, Zinszer, & Raizada (2015) regarding representaitonal similarity based decoding and encoding methods for fMRI, the foundation upon which this work was built.