| Perceptual constancy of texture roughness in the tactile system. | |
| | |
MedLine Citation:
|
PMID: 22131421 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Our tactual perception of roughness is independent of the manner in which we touch the surface. A brick surface feels rough no matter how slowly or how rapidly we move our fingers, despite the fluctuating sensory inputs that are transmitted to the finger. Current theories of roughness perception rely solely on inputs from the cutaneous afferents, which are highly affected by scan velocity and force. The question then is: how is roughness constancy achieved? To this end, we characterized the subject's perceived roughness in six scanning conditions. These included two modes of touch: direct touch, where the finger is in contact with the surface, and indirect touch, where the surface is scanned with a hand-held probe; and three scanning modes: active (moving the hand across a stationary surface), passive (moving the surface across a stationary hand), and pseudo-passive (subject's hand is moved by the experimenter across a stationary surface). Here, we show that roughness constancy is preserved during active but not passive scanning, indicating that the hand movement is necessary for roughness constancy in both direct and indirect touch. Roughness constancy is also preserved during pseudo-passive scanning, which stresses the importance of proprioceptive input. The results show that cutaneous input provides the signals necessary for roughness perception and that proprioceptive input resulting from hand movement-rather than a motor efference copy-is necessary to achieve roughness constancy. These findings have important implications in providing realistic sensory feedback for prosthetic-hand users. |
| | |
Authors:
|
Takashi Yoshioka; James C Craig; Graham C Beck; Steven S Hsiao |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: The Journal of neuroscience : the official journal of the Society for Neuroscience Volume: 31 ISSN: 1529-2401 ISO Abbreviation: J. Neurosci. Publication Date: 2011 Nov |
Date Detail:
|
Created Date: 2011-12-01 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8102140 Medline TA: J Neurosci Country: United States |
Other Details:
|
Languages: eng Pagination: 17603-11 Citation Subset: IM |
Affiliation:
|
Zanvyl Krieger Mind/Brain Institute, Department of Psychological and Brain Sciences, Department of Applied Mathematics, and Department of Neuroscience, Johns Hopkins University, Baltimore, Maryland 21218, and Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana 47405. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Syntaxin1A Lateral Diffusion Reveals Transient and Local SNARE Interactions.
Next Document: CCAAT/enhancer binding protein-? expression by dendritic cells regulates CNS autoimmune inflammatory...