/khbm2019_RSA_tutorial

RSA tutorial for KHBM summer school 2019

Primary LanguageHTMLGNU General Public License v3.0GPL-3.0

Representational Similarity Analysis tutorial

Author: Choong-Wan Woo (Sungkyunkwan University) https://cocoanlab.github.io/

Date: 2019/8/17 @ KHBM 2019 Summer school

Slides

Download: You can download the slide PDF here

If you want PPT file (>50MB), please use the following dropbox link

Dependencies

To run the Matlab scripts tutorial_main.mlx, or tutorial_main.m, you will need the following tools installed in your computer. The code and results can be viewed in tutorial_main.html or tutorial_main.pdf.

The Matlab script tutorial_main.mlx was tested on macOS High Sierra with Matlab 9.5 R2018b.

See also RSA toolbox written by Kriegeskorte group: https://github.com/rsagroup/rsatoolbox

Dataset

from Woo et al., 2014, Nat Comms; Paper PDF can be downloaded here

Participants: N = 59

Tasks

There were two types of tasks, and in each task, there were two conditions (2 x 2 design)

  • Physical pain task (Heat, Warmth conditions)
  • Social pain task (Rejection, Friends conditions)

Analysis plan

  • Step 1: Computing RDMs for each participant, for each region (4 ROIs: aINS, dACC, S2/dpINS, TPJ), and visualize the RDMs
  • Step 2: Comparing brain and model RDMs: We have two model RDMs: physical vs. social, aversive vs. non-aversive, and 4 ROIs
  • Step 3: Statistical inference: Using the neurosync mask that Woo 2014 used, we will do statistical inference