Perceiving biological motion: dissociating visible speech from walking.

Full Abstract

Neuropsychological research suggests that the neural system underlying visible speech on the basis of kinematics is distinct from the system underlying visible speech of static images of the face and identifying whole-body actions from kinematics alone. Functional magnetic resonance imaging was used to identify the neural systems underlying point-light visible speech, as well as perception of a walking/jumping point-light body, to determine if they are independent. Although both point-light stimuli produced overlapping activation in the right middle occipital gyrus encompassing area KO and the right inferior temporal gyrus, they also activated distinct areas. Perception of walking biological motion activated a medial occipital area along the lingual gyrus close to the cuneus border, and the ventromedial frontal cortex, neither of which was activated by visible speech biological motion. In contrast, perception of visible speech biological motion activated right V5 and a network of motor-related areas (Broca's area, PM, M1, and supplementary motor area (SMA)), none of which were activated by walking biological motion. Many of the areas activated by seeing visible speech biological motion are similar to those activated while speech-reading from an actual face, with the exception of M1 and medial SMA. The motor-related areas found to be active during point-light visible speech are consistent with recent work characterizing the human "mirror" system (Rizzolatti, Fadiga, Gallese, & Fogassi, 1996).

Learn Faster Today Improve your study skills

Author information

Author/s: Santi, Andrea (A); Servos, Philip (P); Vatikiotis-Bateson, Eric (E); Kuratate, Takaaki (T); Munhall, Kevin (K);

Affiliation: Wilfrid Laurier University, Waterloo, Canada.

Journal and publication information

Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't

Journal: Journal of cognitive neuroscience (J Cogn Neurosci), published in United States. (Language: eng)

Reference: 2003-Aug; vol 15 (issue 6) : pp 800-9

Dates: Created 2003/09/26; Completed 2003/10/23; Revised 2006/11/15;

PMID: 14511533, status: MEDLINE (last retrieval date: 12/26/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

External Links for this article (including full text providers, if available):

Click Electronic Full-text Provider Links to see options for finding the electronic full text links to this article. Note there may be a subscription or fee required for access to the full text. See our FAQ for information on finding FREE full text articles.

This article may also be located in paper journal collections available in many libraries. Use the Journal and Publication Information above to find the full article.

MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adult
Biomechanics
Brain Mapping
Female
Humans
Light
Magnetic Resonance Imaging - instrumentation; methods
Male

Motion
Motion Perception - physiology
Motor Cortex - physiology
Pattern Recognition, Visual
Photic Stimulation
Speech - physiology
Speech Perception
Walking - physiology

These are the highest related articles currently in the database:

Temporal facilitation and stroboscopic motion. 30 Dec 1978
Male, female heart disease-relationship with vehicle travel. 29 Nov 1979
Extrapolation of horizontal motion to linear targets of different orientation. 30 Dec 1984
A comparison of oculomotor and motion parallax cues of egocentric distance. 30 Dec 1978
Eye torsion in response to a tilted visual stimulus. 30 Dec 1978
The effect of retinal image motion on vision in coloured light. 30 Dec 1978
Pavlovian conditioning of Chevreul's movement. 29 Sep 1977
Postural readjustments induced by linear motion of visual scenes. 25 Jun 1977
Older motorist yielding to pedestrians: are older drivers inattentive and unwilling to stop? 30 Dec 1991
Lumbar motion trends and correlation with low back pain. Part II. A roentgenological evaluation of quantitative segmental motion in lateral bending. 29 Apr 1992

See 100+ related articles.