RSA Analysis Inquiry

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Olivia Yang

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Feb 28, 2024, 11:47:20 AM2/28/24

to CoSMoMVPA

Hi experts,

In our experiment, we presented six face stimuli to subjects using a block design, with two emotions (neutral and angry) across three identities. After scanning, subjects were asked to rate the trustworthiness of each face stimulus on a scale from 0 to 10. Our goal is to utilize RSA to investigate two main aspects: firstly, to uncover any shared mechanisms in the representation of face emotion and trustworthiness, and secondly, to explore whether the representation of face emotion influences the representation of trustworthiness.

Can CosMoMVPA effectively accomplish both of the goals? I think we can calculate the neural RDM using the emotion category RDM first, followed by calculating the neural RDM using the rating RDM. Then I plan to conduct a regression analysis between these two neural RDMs. Does this way seem appropriate?

Thank you very much!

Best,

Olivia

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