The influence of perceptual and knowledge-based familiarity on the neural substrates of face perception

doi:10.1080/17470911003693622

Paper

The influence of perceptual and knowledge-based familiarity on the neural substrates of face perception

Published Feb 17, 2011 · J. Cloutier, W. M. Kelley, T. Heatherton

Social Neuroscience

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70

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8

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Abstract

This study examined the neural substrates of facial familiarity and person-knowledge. Based on current neural models of face perception, it was hypothesized that distinct extended networks of brain regions differentiate the perception of (a) novel faces, (b) novel faces associated with person-knowledge, (c) perceptually familiar faces and (d) familiar faces for which person-knowledge was learned. To test this hypothesis, we conducted an event-related functional magnetic resonance imaging experiment during which participants viewed faces experimentally manipulated to represent these different levels of familiarity. Results confirmed that distinct networks of brain regions, particularly the medial prefrontal cortex, underlie the perception of faces for which person-knowledge is available.

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Study Snapshot

Key takeawayDistinct networks of brain regions, particularly the medial prefrontal cortex, underlie the perception of faces with person-knowledge, compared to perceptually familiar faces and faces without person-knowledge.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

The influence of perceptual and knowledge-based familiarity on the neural substrates of face perception

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