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Volumn 8, Issue 4, 1998, Pages 494-502

Complex motion perception and its deficits

Author keywords

[No Author keywords available]

Indexed keywords

BRAIN NERVE CELL; HUMAN; MOVEMENT PERCEPTION; PRIORITY JOURNAL; RECEPTIVE FIELD; REVIEW; TEMPORAL LOBE; VISUAL CORTEX;

EID: 0032143473     PISSN: 09594388     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0959-4388(98)80037-8     Document Type: Article
Times cited : (52)

References (75)
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    • of outstanding interest. The authors studied the responses of MSTd neurones to the speed of optical flow stimuli. They report a range of response profiles to the mean speed of a stimulus, but found that nearly 90% of the cells studied preferred stimuli containing a speed gradient to those in which all the dots moved at the same speed. They conclude that the sensitivity of MSTd neurones to patterns of speed, as well as to patterns of direction, strengthens the view that MSTd is involved in the analysis of optical flow for representation of the structure of the three-dimensional visual environment.
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    • Lappe M, Pekel M, Hoffmann KP. Optokinetic eye movements elicited by radial optic flow in the macaque monkey. of outstanding interest J Neurophysiol. 79:1998;1461-1480 This detailed and thorough neurophysiology paper investigates whether spontaneous eye movements in macaque monkeys are elicited by radial optic flow. The authors were interested to determine whether optic flow stimuli simulating self-movement would induce optokinetic eye movements and, if so, to characterise the attributes of these movements. The authors found strong evidence that an optokinetic system exists in the monkey. First, the experimental results suggest that, at least in part, eye movements are elicited passively by retinal slip occurring in optic flow fields, especially when the eyes deviate from the focus of expansion. Second, the deviation of the eye movements direction from the local direction on the fovea provides evidence for the integration of the surrounding motion vectors that is typical for the optokinetic system. Another important, although controversial, finding of this study is that the monkeys tend to shift the median eye position into the focus of expansion, but contraction stimuli produce shifts in the opposite direction. Furthermore, the median eye position was strongly affected by head position, suggesting that the reference of the median eye position is the naso-temporal axis. The authors also provide an elegant discussion of the properties of slow phase eye movements and their stimulus specificity. Of value is the comparison of their data with respect to eye movements occurring during real self-motion and the discussion of the retinal flow fields in the context of an ecological framework. This paper will be of lasting importance in the field.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.