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Title: Orientation and direction-of-motion response in the middle temporal visual area (MT) of New World owl monkeys as revealed by intrinsic-signal optical imaging
Author: Kaskan, Peter M. ; Dillenburger, Barbara C. ; null(吕海东) ; Roe, Anna W. ; Kaas, Jon H.
Source: FRONTIERS IN NEUROANATOMY
Issued Date: 2010
Volume: 4, Pages:23-23
Keyword: orientation columns ; cortical modules ; visual cortex ; direction-of-motion columns ; primates
Subject: Anatomy & Morphology ; Neurosciences & Neurology
Corresponding Author: Kaas, JH (reprint author), Vanderbilt Univ, Dept Psychol, 301 Wilson Hall,111 21st Ave S, Nashville, TN 37203 USA,jon.h.kaas@vanderbilt.edu
English Abstract: Intrinsic-signal optical imaging was used to evaluate relationships of domains of neurons in middle temporal visual area (MT) selective for stimulus orientation and direction-of-motion. Maps of activation were elicited in MT of owl monkeys by gratings drifting back-and-forth, flashed stationary gratings and unidirectionally drifting fields of random dots. Drifting gratings, typically used to reveal orientation preference domains, contain a motion component that may be represented in MT. Consequently, this stimulus could activate groups of cells responsive to the motion of the grating, its orientation or a combination of both. Domains elicited from either moving or static gratings were remarkably similar, indicating that these groups of cells are responding to orientation, although they may also encode information about motion. To assess the relationship between domains defined by drifting oriented gratings and those responsive to direction-of-motion, the response to drifting fields of random dots was measured within domains defined from thresholded maps of activation elicited by the drifting gratings. The optical response elicited by drifting fields of random dots was maximal in a direction orthogonal to the map of orientation preference. Thus, neurons in domains selective for stimulus orientation are also selective for motion orthogonal to the preferred stimulus orientation.
Indexed Type: sci
Language: 英语
Content Type: 期刊论文
URI: http://ir.sibs.ac.cn/handle/331001/1587
Appears in Collections:神经所(总)_期刊论文
脑功能成像研究组_期刊论文
脑成像研究组_期刊论文

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Recommended Citation:
Kaskan, Peter M.; Dillenburger, Barbara C.; Lu, Haidong D.; Roe, Anna W.; Kaas, Jon H..Orientation and direction-of-motion response in the middle temporal visual area (MT) of New World owl monkeys as revealed by intrinsic-signal optical imaging,FRONTIERS IN NEUROANATOMY,2010,4():23-23
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