The brain learns faces fastest in person

The brain learns faces fastest in person
Experimental paradigm and EEG analysis methods. Credit: Ambrus et al., JNeurosci 2021

The neural representation of a familiar face strengthens faster when you see someone in person, according to a new study published in JNeurosci.

The brain loves —there's even an interconnected network of brain areas dedicated to face-processing. Despite all the research on how the brain sees faces, little is known about how the neural representation of a face changes as it becomes familiar.

To track how familiarity brain signals change, Ambrus et al. measured participants' activity with EEG before and after getting to know different faces. Participants were exposed to faces in one of three ways: perceptual exposure (a sorting game), (watching a TV show), and in-person (chatting with lab members). A jolt of appeared on the EEG around 400 milliseconds after viewing a face; the strength of the signal was tied to the familiarity of the face. The type of exposure affected how much the signal changed: in-person exposure strengthened it the most, followed by media exposure. Perceptual exposure had very little impact on the familiarity signal.

These results emphasize the importance of in-person interactions when getting to know new people.


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More information: Getting to Know You: Emerging Neural Representations During Face Familiarization, JNeurosci (2021). DOI: 10.1523/JNEUROSCI.2466-20.2021
Journal information: Journal of Neuroscience

Citation: The brain learns faces fastest in person (2021, May 24) retrieved 3 August 2021 from https://medicalxpress.com/news/2021-05-brain-fastest-person.html
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