PMID: 9630296Jun 18, 1998Paper

Complex motion stimuli localize higher-order visual processing in normal observers and in patients with parietal lesions

Australian and New Zealand Journal of Ophthalmology
Johannes M ZankerM Fahle

Abstract

The present paper illustrates how modern techniques applied in neuroscience can help us to understand the processing of visual information in the human brain and, in turn, how they can be helpful to characterize functional deficits in patients with cortical lesions. Based on theoretical considerations, motion stimuli are developed that require very specific operations to be performed by the visual system. Computational models explaining the processing of these 'Fourier' and 'second-order' motion stimuli are characterized by increasing complexity. The same types of stimuli are used to map the distribution of cortical activity during motion perception by measuring the magnetic and electrical fields on the head surface. Clinical investigations of patients with lesions in the parietal cortex indicate specific deficits in the perception of such stimuli that can be related to the lesion sites.

References

Aug 1, 1989·Trends in Neurosciences·A Borst, M Egelhaaf
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Jun 1, 1983·Brain : a Journal of Neurology·J ZihlN Mai
Nov 1, 1994·Visual Neuroscience·D R PatzwahlE O Altenmüller
Apr 1, 1994·Die Naturwissenschaften·J Zanker
Jan 31, 1996·Neuroreport·D R PatzwahlE O Altenmüller
Apr 1, 1989·Proceedings of the National Academy of Sciences of the United States of America·C Chubb, G Sperling

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Citations

Jan 7, 2009·Molecular Diversity·Chun CaiLi-Yan Zeng

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