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د. عبدالله بن فهد بن داود

Assistant Professor

قسم علم النفس- كلية التربية

مبنى 15، الطابق الأرضي، مكتب رقم: أأ 161
Journal Article

Investigation of the Relationship Between Orientation Discrimination Thresholds, Autistic, and Schizotypal Personality Traits

Excitation inhibition balance Orientation Discrimination Task Autistic personality traits Schizot

Imbalances in cortical excitation and inhibition (E-I) have been implicated in both autism spectrum conditions (ASC) and schizophrenia spectrum conditions (SSC). However, most studies investigate these clinical conditions independently, possibly due to the difficulty of obtaining comorbid clinical populations. As such, the current study investigated the relationship between performance in the orientation discrimination task “ODT”; as a potential proxy for E-I balance and the autistic (as assessed by Autism Spectrum Quotient “AQ”) and schizotypal personality traits (as assessed by Schizotypal Personality Questionnaire-Brief “SPQ-BR”) in the general population. 87 healthy adult volunteers participated in the study. We found that high autistic personality traits are associated with enhanced performance in the oblique condition of ODT. In contrast, high schizotypal personality traits are associated with poor performance in the vertical condition of ODT. Such associations support the suggested disruption of cortical E-I balance in ASC and SSC.

Publication Work Type
Original Article
more of publication

Excitation-inhibition (E-I) balance has been indirectly inferred from psychophysical measures (i.e., performance in orientation discrimination task [ODT]) and neurophysiological measures (i.e.,…

Published in:
IBRO Neuroscience Reports

The aim of the current study was to investigate the difference between hearing students of King Saud University and their counterparts with hearing disabilities in sustained visual attention.

Published in:
Journal of Educational Sciences

The discrepancy in the effectiveness of transcranial Direct Current Stimulation (tDCS) on cognitive processes raises the need for further investigations.