The effect of peripheral visual motion on focal contrast sensitivity in positive- and negative-symptom schizophrenia

  title={The effect of peripheral visual motion on focal contrast sensitivity in positive- and negative-symptom schizophrenia},
  author={Walter L. Slaghuis and A K Thompson},

Spatio-temporal luminance contrast sensitivity and visual backward masking in schizophrenia

The reduction in contrast sensitivity for low spatial frequency counterphase flicker in the negative-symptom group is consistent with a reduction in the ‘contrast gain control’ mechanism of magnocellular channels, and that the reduction in Contrast sensitivity for medium and high stationary gratings is consistency with a disorder in parvo cellular channels.

Visual contrast sensitivity in adults with schizophrenia and relatives not affected

The results showed changes in the visual mechanisms that process vertical sine-wave gratings related the schizophrenia, and that the visual CS for participants with schizophrenia was lower than those of adults without schizophrenia and the non-affected relatives.

What's in a face? Effects of stimulus duration and inversion on face processing in schizophrenia

Mesopic Visual Contrast Sensitivity in Patients with Major Depression

The present study evaluated the effects of major depression on visual contrast sensitivity (CS) at low mesopic luminance (.7 cd/m2 mean luminance), a condition that has been little explored in the

Contrast sensitivity development for spatial frequencies in children

The aim of this work was to measure the contrast sensitivity function (CSF) for visual spatial frequencies, ranging between 0.25 and 2 cpd, in children (4, 5, 6 and 7 years old) and adults. The

Schizophrenia spectrum participants have reduced visual contrast sensitivity to chromatic (red/green) and luminance (light/dark) stimuli: new insights into information processing, visual channel function, and antipsychotic effects

These results demonstrate visual information processing deficits in schizophrenia spectrum populations but do not support the notion of selective abnormalities in the function of subcortical channels as suggested by previous studies.

Patients with schizophrenia show deficits on spatial frequency doubling

Acute effect of alcohol intake on sine-wave Cartesian and polar contrast sensitivity functions

Alcohol intake seems to affect the processing of sine-wave gratings at maximum sensitivity and at the low and high frequency ends for angular frequency stimuli, both under photopic luminance conditions.



Luminance flicker sensitivity in positive- and negative-symptom schizophrenia

It was concluded that the significant reductions in flicker sensitivity at medium and high temporal frequencies in the negative-symptom group provided evidence for an impairment in magnocellular channels.

Spatial frequency masking in positive- and negative-symptom schizophrenia.

The role of transient and sustained channels in masking was investigated in groups with positive and negative symptoms in schizophrenia and in a control group, providing evidence for distinguishable differences in visual masking.

Visual processing deficits in acute and chronic schizophrenics.

: Psychophysical techniques have been used to assess the duration that brief visual stimuli remain in visual memory. At the earliest "iconic" stage the duration depends on several parameters, one of

The effect of distraction on smooth pursuit eye movements: comparison of normal subjects with schizophrenic patients

Smooth pursuit eye movements (SPEM) made in response to 15°/s and 30°/s targets were studied in schizophrenic patients (DSM III-R and ICD 10 criteria) and normal controls using infrared

The influence of dopamine on spatial vision

Pupillary measurements suggested that these effects were not due to drug-induced changes in pupil size, and the results are discussed in terms of the functional role of dopamine in the retina, and a possible application in therapy for amblyopia.

Spatial and Temporal Contrast-Sensitivity Functions of the Visual System

T HE dependence of the form of the spatial contrast-sensitivity function for a square-wave test grating upon the duration of exposure of the target has been investigated by Schober and Hilz. 1 Kelly