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The Organization and Reorganization of Human Speech Perception (1992)

Werker, J F ; Tees, R C

Palo Alto, Calif. : Annual Reviews

Annual Review of Neuroscience 15 (1992), S. 377-402

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ISSN: 0147-006X

Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff

Topics: Biology , Medicine

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1146/annurev.ne.15.030192.002113

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Orienting behavior by rats with visual cortical and subcortical lesions (1981)

Midgley, G. C. ; Tees, R. C.

Springer

Experimental brain research 41 (1981), S. 316-328

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ISSN: 1432-1106

Keywords: Orienting behavior ; Superior colliculus ; Visual cortex ; Rat

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary The effect of visual cortical and subcortical lesions on orienting behavior was assessed by examining the rats' ability to interrupt an ongoing response and perform appropriate head and postural adjustments to repeatedly presented auditory or apparently moving visual stimuli. Large lesions of the entire superior colliculus (SC) or the deep layers of the SC did not result in visual agnosia or the inability to perform the motor responses involved in orienting. Rather, the orienting response simply was not emitted to visual stimuli that the intact rat treated as less salient, but was to those it treated as more salient. Lesions of either the superficial layers of the SC or visual cortex also did not completely prevent orienting to very salient, apparently moving visual stimuli, but did produce changes in the number of responses made to such stimuli and in the occurrence of other components of orienting behavior. It was suggested that the SC and visual cortex play a modulatory role in orienting behavior and that stimulus characteristics must be considered in the development of neuronal models of orienting behavior.