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3. The Relationship between Clinical and Psychophysical Assessments of Visual Perceptual Disturbances in Individuals at Clinical High Risk for Psychosis: A Preliminary Study.

Author

Ifrah, Chloe, Herrera, Shaynna N., Silverstein, Steven M., Corcoran, Cheryl M., Gordon, James, Butler, Pamela D., and Zemon, Vance

Subjects
*CONTRAST sensitivity (Vision), *VISION, *EDUCATIONAL tests & measurements, *SCHIZOPHRENIA, *PSYCHOSES
Abstract

This study investigated relations between a measure of early-stage visual function and self-reported visual anomalies in individuals at clinical high risk for psychosis (CHR-P). Eleven individuals at CHR identified via the Structured Interview for Psychosis-Risk Syndromes (SIPS) were recruited from a CHR-P research program in NYC. The sample was ~36% female, ranging from 16 to 33 years old (M = 23.90, SD = 6.14). Participants completed a contrast sensitivity task on an iPad with five spatial frequencies (0.41–13 cycles/degree) and completed the self-report Audio-Visual Abnormalities Questionnaire. Higher contrast sensitivity (better performance) to low spatial frequencies was associated with higher perceptual (r = 0.616, p = 0.044) and visual disturbances (r = 0.667, p = 0.025); lower contrast sensitivity to a middle spatial frequency was also associated with higher perceptual (r = −0.604, p = 0.049) and visual disturbances (r = −0.606, p = 0.048). This relation between the questionnaire and contrast sensitivity to low spatial frequency may be indicative of a reduction in lateral inhibition and "flooding" of environmental stimuli. The association with middle spatial frequencies, which play a critical role in face processing, may result in a range of perceptual abnormalities. These findings demonstrate that self-reported perceptual anomalies occur in these individuals and are linked to performance on a measure of early visual processing. [ABSTRACT FROM AUTHOR]

Published
2024
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15. Personality and Risk Taking in Sports

Author

Levitch, Cara F., primary, Ifrah, Chloe, additional, Kim, Mimi, additional, Stewart, Walter F., additional, Lipton, Richard B., additional, Zimmerman, Molly E., additional, and Lipton, Michael L., additional

Published
2018
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