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2004 ; 15
(1-2
): 3-13
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gab.com Text
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English Wikipedia
Seeing without the occipito-parietal cortex: Simultagnosia as a shrinkage of the
attentional visual field
#MMPMID15201489
Michel F
; Henaff MA
Behav Neurol
2004[]; 15
(1-2
): 3-13
PMID15201489
show ga
Following bi-parietal lesions patient AT showed a severe inability to relocate
her attention within a visual field which perimetry proved to be near-normal. An
experimental approach with tasks testing visuo-spatial attention demonstrated a
shrinkage of A.T.'s attentional visual field. With her visual attention narrowed
to a kind of functional tunnel vision, the patient exhibited simultanagnosia
(Wolpert, 1924), a symptom previously described in 1909 by Balint under the label
of Psychic paralysis of "Gaze". In striking contrast AT showed an efficient and
effortless perception of complex natural scenes, which, according to recent work
in normal subjects, necessitate few if any attentional resources.