tientong98 / fmri_demo Goto Github PK

• Download and preprocess data
• Run psychophysiological interaction (PPI) analysis
• Run beta series analysis
• MVPA: predict task conditions from brain activation

Link to data: https://openneuro.org/datasets/ds001229/versions/00001

Citation: Lewis-Peacock, J. A., Cohen, J. D., & Norman, K. A. (2016). Neural Evidence of the Strategic Choice Between Working Memory and Episodic Memory in Prospective Remembering. Neuropsychologia. https://doi.org/10.1016/j.neuropsychologia.2016.11.006

Task: This dataset contains 25 subjects performing a dual-task propspective memory experiment. Participants were shown a series of words while pictures of faces and scenes were presented in the background. Participants performed an ongoing task while monitoring for a picture target (a particular face or a particular scene) to reappear. Each subject performed two versions of the task (WM-bias, EM-bias) in alternating runs of 15 trials. Each subject had 6 functional runs of 301 TRs. Between runs, participants were given a break during which the experimenter checked that the participant was comfortable and alert.

Task diagram: The dual-task experiment consisted a picture-target detection prospective memory task (“PM”) embedded in an ongoing lexical-decision task (“OG”). Half of the trials were WMbias trials (1-back lexical decisions and a small set of repeating homogeneous pictures) and half were EMbias trials (2-back lexical decisions and a large set of trial-unique heterogeneous pictures). Two-thirds of all trials included both tasks (“PM+OG”), and one-third did not require PM responses (“OG only”)