Research article summary:

Motion perception of saccade-induced retinal translation.

Abstract Extract:
Active visual perception relies on the ability to interpret correctly retinal motion signals induced either by moving objects viewed with static eyes or by stationary objects viewed with moving eyes. A motionless environment is not normally perceived as ... (Full abstract text below)

Published 2002Nov in Journal: Proc Natl Acad Sci U S A (Language : eng)

Full Pubmed Extract

This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:

1. Proc Natl Acad Sci U S A. 2002 Nov;99(23):15159-63

Motion perception of saccade-induced retinal translation.

Castet E, Jeanjean S, Masson GS

Institut de Neurosciences Physiologiques et Cognitives, Centre National de la Recherche Scientifique, 31 chemin Joseph Aiguier, 13402 Marseille Cedex 20, France. castet@lnf.cnrs-mrs.fr

Active visual perception relies on the ability to interpret correctly retinal motion signals induced either by moving objects viewed with static eyes or by stationary objects viewed with moving eyes. A motionless environment is not normally perceived as moving during saccadic eye movements. It is commonly believed that this phenomenon involves central oculomotor signals that inhibit intrasaccadic visual motion processing. The keystone of this extraretinal theory relies on experimental reports showing that physically stationary scenes displayed only during saccades, thus producing high retinal velocities, are never perceived as moving but appear as static blurred images. We, however, provide evidence that stimuli optimized for high-speed motion detection elicit clear motion perception against saccade direction, thus making the search for extraretinal suppression superfluous. The data indicate that visual motion is the main cue used by observers to perform the task independently of other perceptual factors covarying with intrasaccadic stimulation. By using stimuli of different durations, we show that the probability of perceiving the stimulus as static, rather than moving, increases when the intrasaccadic stimulation is preceded or followed by a significant extrasaccadic stimulation. We suggest that intrasaccadic motion perception is accomplished by motion-selective magnocellular neurons through temporal integration of rapidly increasing retinal velocities. The functional mechanism that usually prevents this intrasaccadic activity from being perceived seems to rely on temporal masking effects induced by the static retinal images present before and/or after the saccade.

PMID : 12417765 [PubMed - Indexed for MEDLINE]

This information is obtained from the National Library of Medicine (NLM). Abstract text and other information may be subject to copyright. Type "NLM copyright" into Google for more information.

Full Author Information

First Name	LastName	Initials
Eric	Castet	E
Sébastien	Jeanjean	S
Guillaume S	Masson	GS

Affiliation: Institut de Neurosciences Physiologiques et Cognitives, Centre National de la Recherche Scientifique, 31 chemin Joseph Aiguier, 13402 Marseille Cedex 20, France. castet@lnf.cnrs-mrs.fr

3rd Party provider links

Click the links below to go to related 3rd party information:

MESH categories and related page links

This article was linked to the MESH categories shown on the left below. The links on the right are related Memletics pages.

Category links from this article:

Humans
Models, Neurological
Motion Perception - physiology
Reaction Time - physiology
Retina - physiology
Saccades - physiology
Visual Perception - physiology

Links for this article

For links to places where you can get the full text of this article see links. Note there may be a subscription or fee required for access to the full text.

New! Using similar technology to this site, we have launched find-health-articles.com, targeting over 1 million health research article abstracts.

Here are some articles related to this one (by title keywords):

Tongues and lips without jaws: a comparison of methods for decoupling speech movements.

Poor visibility of motion in depth is due to early motion averaging.

The effect of stimulus blanking on the detection of intrasaccadic displacements of translating objects.

Visual feedback induces opposite effects on elementary centre of gravity and centre of pressure minus centre of gravity motions in undisturbed upright stance.

Local computation of angular velocity in rotational visual motion.

Gain adaptation of exogenous shifts of visual attention.

Control of stimulus-response translation in dual-task performance.

Vestibular stimulation affects medium latency postural muscle responses.

Temporal coherence in visual rotation.

The synergy between speech production and perception.

>>> Get more research article abstracts like these, or browse abstracts.

Keywords in this article:

ability, accomplished, active, activity, after, against, appear, believed, blurred, central, clear, commonly, correctly, covarying, cue, data, detection, different, direction, displayed, durations, effects, elicit, environment, evidence, experimental, extraretinal, extrasaccadic, eyes, factors, followed, functional, high, images, increases, increasing, independently, indicate, induced, inhibit, integration, interpret, intrasaccadic, involves, keystone, magnocellular, main, making, masking, mechanism, motion, motionless, movements, moving, neurons, never, normally, not, objects, observers, oculomotor, optimized, other, perceived, perceiving, perception, perceptual, perform, phenomenon, physically, preceded, present, prevents, probability, processing, producing, provide, rapidly, relies, rely, reports, retinal, saccades, saccadic, scenes, search, seems, selective, showing, signals, significant, speed, static, stationary, stimulation, stimuli, stimulus, suggest, superfluous, suppression, task, temporal, theory, usually, velocities, viewed, visual

Also, see our new free speed reading online course (beta version)