Cited by 60Schizophrenia research and treatmentVisual perception and processing mechanismsHallucinations in medical conditions

Impaired detection of visual motion in schizophrenia patients

Li, Chiang-Shan Ray·2002·Progress in Neuro-Psychopharmacology and Biological Psychiatry

Abstract

Purpose A recent report demonstrated impaired auditory detection and discrimination in schizophrenia patients. It is suggested that a deficit in attention resulted in flatter slopes of the psychometric functions. Here, we investigated whether these patients showed a similar deficit in another sensory modality. Specifically, we examined a subset of the schizophrenia patients in a visual task involving motion detection.Methods A total of 13 schizophrenia patients and 14 normal controls detected the presence of a group of random dots moving in a coherent direction among other dots moving in random directions. Signal intensity varied from trial to trial. Detection sensitivity and bias were computed using signal detection theory.Results The schizophrenia patients were less sensitive in detecting motion stimuli, compared to normal subjects. The decrement in sensitivity varies with signal-to-noise ratio. The two groups did not differ in response bias.Conclusion Schizophrenics were impaired in visual, as well as in auditory, attention, in accordance with the idea that attention impairment may represent a core deficit in schizophrenia.

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Crossref · 10.1016/s0278-5846(02)00207-5

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47 of 47 references verified0 citation errors · 0 not checkable

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  • A large number of studies have reported motion processing deficits in schizophrenia.

    “A large number of studies have reported motion processing deficits in schizophrenia (28–32).”

    From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [31]

  • Numerous studies have shown motion processing deficits in schizophrenia.

    “As discussed in the preceding text, numerous studies have shown motion processing deficits in schizophrenia (28,30–32,81).”

    From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [31]

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Authors
Li, C.-S. R.
Affiliations
Chang Gung Memorial Hospital (TW)
Corresponding author
Li, Chiang-Shan Ray
Venue
Progress in Neuro-Psychopharmacology and Biological Psychiatry
Publisher
Elsevier BV
Published
2002-06
Volume
26
Issue
5
Pages
929-934
ISSN
0278-5846 (ISSN-L)
OpenAlex
W2008412902
Cited by
60
References
47
Citations by year
2024: 1 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 1 · 2015: 5 · 2014: 2 · 2013: 2
FWCI
1.92
Type
journal article
Language
en
Open access
closed
Locations
  • Progress in Neuro-Psychopharmacology and Biological Psychiatry (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 › Hallucinations in medical conditions
Keywords
schizophrenia, visual motion detection, attention deficits, signal detection theory, psychometric functions, random dot motion, detection sensitivity, response bias, signal-to-noise ratio
MeSH terms
Adolescent, Adult, Female, Humans, Male, Motion Perception, Photic Stimulation, Regression Analysis, Schizophrenia

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