A shared neural code for perceiving and remembering social interactions in the human superior temporal sulcus.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Social Cognition

Background:

• Recognizing and remembering social information is a fundamental cognitive skill.
• Neural patterns in the superior temporal sulcus (STS) are known to support the perception of social interactions.
• The neural mechanisms underlying the memory of social interactions remain largely unexplored.

Purpose of the Study:

• To investigate the brain mechanisms involved in remembering social interactions.
• To determine if neural activity in the STS during perception is reinstated during recall of social interactions.

Main Methods:

• Utilized functional magnetic resonance imaging (fMRI) encoding analyses.
• Applied machine learning techniques to densely labeled movie and spoken recall data.
• Examined neural responses during free spoken recall of a naturalistic movie.

Main Results:

• A subset of superior temporal sulcus (STS) activity, initially evoked by viewing social interactions, predicted neural responses during memory recall.
• This STS activity was reinstated during the recall of specific social content from the movie.
• Found evidence that STS reactivation underlies the ability to remember social interactions.

Conclusions:

• The superior temporal sulcus (STS) plays a critical role in both perceiving and remembering social interactions.
• Reactivation of STS neural patterns is essential for recalling social information.
• Suggests that the STS holds abstract or conceptual representations of social interactions, beyond purely perceptual information.