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Related Experiment Video

Updated: Apr 15, 2026

MPI CyberMotion Simulator: Implementation of a Novel Motion Simulator to Investigate Multisensory Path Integration in Three Dimensions

MPI CyberMotion Simulator: Implementation of a Novel Motion Simulator to Investigate Multisensory Path Integration in Three Dimensions

Published on: May 10, 2012

Do rhesus monkeys (Macaca mulatta) perceive illusory motion?

Christian Agrillo¹, Simone Gori, Michael J Beran

¹Department of General Psychology, University of Padova, Via Venezia 8, 35131, Padova, Italy, christian.agrillo@unipd.it.

Animal Cognition

|March 28, 2015

Summary

This summary is machine-generated.

Rhesus monkeys perceive the Rotating Snake illusion, a popular human motion illusion. This suggests shared neurocognitive systems for motion perception between humans and non-human primates.

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Area of Science:

Primate vision
Comparative psychology
Neuroscience

Background:

Visual illusions are crucial for understanding perception across species.
Previous research on animal perception using illusions has largely excluded motion perception.
It remains unknown if non-human primates experience motion illusions.

Purpose of the Study:

To investigate if rhesus monkeys (Macaca mulatta) perceive the Rotating Snake illusion (RSI).
To compare motion perception in rhesus monkeys and humans.
To explore potential similarities in the neurocognitive basis of motion perception.

Main Methods:

Four experiments were conducted with rhesus monkeys and adult humans.
Monkeys were trained to discriminate static from dynamic visual arrays.
The Rotating Snake illusion and a control stimulus were presented to assess perception.

Main Results:

Rhesus monkeys spontaneously classified the RSI as a dynamic array.
Monkeys could be trained to discriminate the RSI from a control stimulus.
Human performance was comparable to that of the monkeys.

Conclusions:

Some rhesus monkeys exhibit human-like perception of the Rotating Snake illusion.
These findings suggest potential similarities in motion perception mechanisms between humans and non-human primates.
This research opens avenues for further investigation into primate visual neurocognition.