Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Pantomimed actions may be controlled by the ventral visual stream.

D A Westwood¹, C D Chapman, E A Roy

¹Department of Psychology, University of Waterloo, Ontario, Canada. dawestwo@watarts.uwaterloo.ca

Experimental Brain Research

|March 16, 2000

Summary

This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Morbidity associated with the immediate vertical rectus abdominus myocutaneous flap reconstruction after radical pelvic surgery.

Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland·2019

Same author

Simulator Technique for Assessing the Bacteriological Control of Food Equipment Surfaces by Cleaning Systems.

Journal of food protection·2019

Same author

Laparoscopic excision of a benign retrorectal tumour - a video vignette.

Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland·2018

Same author

Identification of the ureter during robotic colorectal surgery using lighted stents - a video vignette.

Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland·2017

Same author

Methylene blue-assisted submucosal dissection in transanal surgery - a video vignette.

Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland·2017

Same author

Methylene blue submucosal infiltration may facilitate transanal submucosal dissection.

Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland·2017

Visual illusions affect perception but not natural actions. However, pantomimed actions, like perception, are biased by visual illusions, suggesting ventral stream involvement.

Area of Science:

Cognitive Neuroscience
Visual Perception
Motor Control

Background:

The two-stream model posits separate ventral (perception) and dorsal (action) visual processing streams.
Natural actions are typically scaled to true object properties, unlike perceptual judgments.
Pantomimed actions, directed at remembered targets, may differ in neural control from natural actions.

Purpose of the Study:

To investigate whether pantomimed actions are processed by the ventral stream, similar to perception, or the dorsal stream, like natural actions.
To test the hypothesis that pantomimed actions are mediated by the ventral visual stream.

Main Methods:

Examined the impact of a Müller-Lyer visual size illusion on manual aperture formation.
Compared aperture scaling (perception) and manual aperture formation during natural prehension (action) and pantomimed prehension.

Related Experiment Videos

Measured mean peak aperture (MPA) as an indicator of action and perception scaling.

Main Results:

Consistent with prior research, the visual illusion biased perceptual judgments but not natural actions.
In contrast, pantomimed actions were significantly affected by the visual illusion, mirroring the effects on perception.
Mean peak aperture (MPA) showed illusion effects in both perception and pantomimed action, but not natural action.

Conclusions:

Pantomimed actions appear to be mediated by the ventral visual stream, similar to perceptual judgments.
Natural actions are primarily controlled by the dorsal visual stream, remaining robust against perceptual illusions.
These findings support a dissociation in visual processing streams for different types of actions and perceptions.