Über eine partielle Störung der optischen Tiefenwahrnehmung.

Krämer, Franz

doi:10.1159/000211859

Cited by 5 publications

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“…Fahle and Troscianko 1991). It seems that the ability to make use of at least several of these cues can be disrupted independently, usually after bilateral injuries (Danta et al 1978;Birkmayer 1951;Kramer 1907;Holmes and Horax 1919;Gloning 1965). Complete loss of (not only stereoscopic) depth perception is often associated with the patient's inability to appreciate the third dimension of perception: the world appears like the image on a monitor-screen (Riddoch 1917;Holmes and Horrax 1919;Faust 1947;Gloning 1965;cf.…”

Section: Defects Of Detecting and Discriminating Motion-or Time-definmentioning

confidence: 99%

Failures of visual analysis: scotoma, agnosia, and neglect

Fahle¹

2003

The Neuropsychology of Vision

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This chapter deals with different types of failure to analyse the visual world, starting with the complete loss of vision, blindness, as well as blindness for circumscribed parts of the visual field, scotomata. It also reports some syndromes characterized by difficulties in perception of and discrimination between different domains or submodalities of vision, while leaving most others intact, such as acquired inability to assess visual motion, or acquired colour blindness caused by cerebral damage (achromatopsia). It then provides an overview of the most astonishing examples of failed visual perception: simultanagnosia; neglect; and Balint's syndrome. These syndromes share the phenomenon that conscious perception of objects in (parts of) the peripheral visual field is absent in spite of intact stimulation of the primary visual cortex by these objects. It also attempts to fill in some gaps of knowledge by means of speculation to produce a consistent taxonomy of symptoms encountered in visual neuropsychology. It combines the theoretical background with clinical findings and with a description of at least some of the methods used to diagnose patients suffering from failures of visual analysis.

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