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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

Comparison of Object Recognition Behavior in Human and Monkey.

Rishi Rajalingham¹, Kailyn Schmidt², James J DiCarlo³

¹Department of Brain and Cognitive Sciences and.

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

|September 5, 2015

Summary

Rhesus monkeys exhibit object recognition behavior quantitatively comparable to humans. Their object confusion patterns closely mirror human patterns, suggesting shared neural representations for visual perception.

Keywords:

human monkey object recognition vision

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Area of Science:

Neuroscience
Cognitive Science
Computer Vision

Background:

Rhesus monkeys are widely used models for human visual processing.
Quantitative comparison of invariant visual object recognition between monkeys and humans is lacking.
Understanding shared visual processing mechanisms is crucial for animal model translation.

Purpose of the Study:

To systematically compare the core object recognition behavior of rhesus monkeys and human subjects.
To determine if monkeys and humans share similar object confusion patterns.
To investigate the underlying neural representations of object perception.

Main Methods:

Generated thousands of naturalistic synthetic images of 24 objects with varied viewing parameters and backgrounds.
Trained two monkeys on a match-to-sample binary object recognition task.
Collected data from 605 human subjects and 33 individual human subjects on Mechanical Turk performing the same tasks.

Main Results:

Monkeys learned new objects within days.
Monkey performance matched mean human performance and showed statistically indistinguishable confusion patterns from individual humans.
Shared object confusion patterns correlated with advanced computer vision representations, not low-level visual models.

Conclusions:

Rhesus monkeys and humans share a common neural shape representation supporting object perception.
This study provides the first systematic comparison of high-level visual behavior between humans and macaque monkeys.
Findings support the validity of using rhesus monkeys as a model for human visual object recognition.