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Cited by 40Schizophrenia research and treatmentVisual perception and processing mechanismsNeural and Behavioral Psychology Studies

Neurophysiologic mechanisms of attention: A selective review of early information processing in schizophrenics

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Schwartz, Barry, D.·2001·Frontiers in bioscience
DOI 10.2741/schwartz
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Abstract

Attention is an integral component of information processing. A pronounced attention deficit exists among people with schizophrenia and their first-degree relatives as compared to persons without this pathology. Schizophrenics demonstrate marked deficiencies on psychophysical tasks that require temporal and / or spatial integration, properties that are associated with the two primary visual pathways composed of magnocellular (M) and parvocellular (P) cells, respectively. The deficit expresses itself as a dysfunctional information processing system that affects higher order processes, for example, perceptual ability and memory. The focus of this review is to integrate results from several divergent areas of research to include those studies that identify the contributions of the M and P pathways associated with information processing and the attention deficit. The diverse approaches reviewed in this chapter converge to provide a neurophysiologic explanation of the attention deficit in schizophrenia.

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  • A fundamental role of the M system/dorsal stream might be to produce a low-resolution template of the visual scene that influences perceptual processes in ventral occipito-temporal cortex by allowing P pathway fine-detailed input to be used more effectively.

    “A fundamental role of the M system/dorsal stream might be to produce a low-resolution template of the visual scene that influences perceptual processes, such as categorization of natural images, object recognition, and perceptual grouping in the ventral occipito-temporal cortex, by allowing P pathway fine-detailed input to be used more effectively (3,75–80).”

    From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [77]

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Authors
Schwartz, B.
Venue
Frontiers in bioscience
Publisher
IMR Press
Published
2001
Volume
6
Issue
1
Pages
d120
ISSN
  • 1093-4715 (ISSN-L)
  • 1093-9946
DOI
10.2741/schwartz
OpenAlex
W73844516
Cited by
40
References
165
Citations by year
2022: 1 · 2020: 1 · 2018: 1 · 2015: 1 · 2014: 2
FWCI
0.49
Type
journal article
Language
en
Open access
Locations
  • Frontiers in bioscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
schizophrenia, attention deficits, visual processing, magnocellular pathway, parvocellular pathway, temporal integration, spatial integration, first-degree relatives, perceptual skills, memory impairment
MeSH terms
Attention, Cognition Disorders, Humans, Mental Processes, Models, Neurological, Perceptual Masking, Pursuit, Smooth, Saccades, Schizophrenia, Sensory Thresholds, Visual Pathways

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