Cited by 146Schizophrenia research and treatmentVisual perception and processing mechanismsHallucinations in medical conditions

Magnocellular contributions to impaired motion processing in schizophrenia

Open access
Kim, Dongsoo, Wylie, Glenn, Pasternak, Roey, Butler, Pamela D., Javitt, Daniel C.·2006·Schizophrenia Research

Abstract

Patients with schizophrenia show impairments in motion processing, along with deficits in lower level processing primarily involving the magnocellular visual pathway. The present study investigates potential magnocellular contributions to impaired motion processing in schizophrenia using a combined neurophysiological and behavioral approach. As compared to prior motion studies in schizophrenia, thresholds were determined for both incoherent and coherent visual motion. In this study, velocity discrimination thresholds were measured for schizophrenia patients (n=14) and age-matched normal control subjects (n=16) using a staircase procedure. Early visual processing was evaluated using steady-state visual evoked potentials (ssVEP), with stimuli biased toward activation of either the magnocellular or parvocellular visual pathways through luminance contrast manipulation. Patients with schizophrenia showed poor velocity discrimination for both incoherent and coherent motion, with no significant group x task interaction. Further, when coherent motion performance was measured at individually determined incoherent motion thresholds, accuracy levels for patients were similar to controls, also indicating similarity of deficit for incoherent vs. coherent motion discrimination. Impairments in velocity discrimination correlated significantly with reduced amplitude of ssVEP elicited by magnocellular -- but not parvocellular -- selective stimuli. This study demonstrates that deficits in motion processing in schizophrenia are significantly related to reduced activation of the magnocellular visual system. Further, this study supports and extends prior reports of impaired motion processing in schizophrenia, and indicates significant bottom-up contributions to higher-order cognitive impairments.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.schres.2005.10.008

Cites

44 of 44 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Significant correlations between impaired motion perception and M-pathway dysfunction point to motion processing deficits in schizophrenia resulting from impaired gain control.

    “Significant correlations between impaired motion perception and M-pathway dysfunction also point to motion processing deficits in schizophrenia resulting from impaired gain control (28).”

    From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [28]

  • Patients with schizophrenia show preferential M-pathway dysfunction, although deficits have also been observed in parvocellular processing.

    “Patients with schizophrenia show preferential M-pathway dysfunction (21,22,28,35–38), although deficits have also been observed in parvocellular processing (19,20).”

    From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [28]

  • 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 [28]

  • Gain control deficits are related to higher-level problems in perceptual organization.

    “There is also evidence that gain control deficits, seen in contrast detection and M-pathway deficits, are important in predicting outcome (22,45), and are related to higher-level problems in perceptual organization (28,46) and to symptomatology (20,47–51).”

    From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [28]

  • 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 [28]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Kim, D., Wylie, G., Pasternak, R., Butler, P. D., & Javitt, D. C.
Affiliations
Nathan Kline Institute for Psychiatric Research (US)
Corresponding author
Javitt, Daniel C.
Venue
Schizophrenia Research
Publisher
Elsevier BV
Published
2006-02
Volume
82
Issue
1
Pages
1-8
ISSN
0920-9964 (ISSN-L)
OpenAlex
W2128944881
Cited by
146
References
44
Citations by year
2026: 2 · 2025: 1 · 2024: 5 · 2023: 3 · 2022: 7 · 2021: 4 · 2020: 5 · 2019: 9 · 2018: 8 · 2017: 4 · 2016: 7 · 2015: 7 · 2014: 4 · 2013: 10 · 2012: 9
FWCI
5.01
Type
journal article
Language
en
Open access
Locations
  • Schizophrenia Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Wellcome Trust
  • National Institute of Mental Health (R37MH049334, R01MH066374, K02-MH-01439, R01 MH49334, R01MH049334, K02MH001439)
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, motion processing
MeSH terms
Adult, Evoked Potentials, Visual, Female, Humans, Male, Motion Perception, Perceptual Disorders, Schizophrenia, Visual Fields, Visual Pathways, Visual Perception, Vision, Binocular, Diagnostic and Statistical Manual of Mental Disorders

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review