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Related Experiment Video

Updated: Sep 3, 2025

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

Clutter Substantially Reduces Selectivity for Peripheral Faces in the Macaque Brain.

Jessica Taubert^1,2, Susan G Wardle³, Clarissa T Tardiff³

¹Laboratory of Brain and Cognition, National Institute of Mental Health, Bethesda, Maryland 20814 j.taubert@uq.edu.au.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience

|July 22, 2022

Summary

This summary is machine-generated.

Clutter reduces the brain

Keywords:

clutter face perception face-selective macaque fMRI multiple objects periphery

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Area of Science:

Neuroscience
Visual Perception
Cognitive Neuroscience

Background:

The brain processes visual stimuli using specialized cortical networks.
Category-selective networks, like those for faces, are crucial for perception.
Real-world viewing often involves cluttered visual scenes, unlike controlled lab conditions.

Purpose of the Study:

To investigate how clutter affects the response and selectivity of face-selective networks.
To determine if face selectivity is uniform across the visual field under clutter.
To assess if the ventral visual pathway retains information about cluttered face locations.

Main Methods:

Functional magnetic resonance imaging (fMRI) was used in awake macaques.
Experiments manipulated the presence/absence of visual clutter.
Face stimuli were presented at varying retinal locations relative to the fovea.

Main Results:

Clutter significantly reduced the response to faces in the peripheral visual field.
Face selectivity remained uniform across the visual field without clutter.
Clutter decreased peripheral face selectivity, but location information was still decodable.

Conclusions:

Clutter impairs the selectivity of face-selective networks for peripheral faces.
Despite reduced selectivity, the brain retains information about the location of cluttered faces.
These findings highlight the impact of viewing conditions on visual processing networks.