Autistic Traits and Enhanced Perceptual Representation of Pitch and Time.

Journal of autism and developmental disorders

PubMedID: 26189179

Stewart ME, Griffiths TD, Grube M. Autistic Traits and Enhanced Perceptual Representation of Pitch and Time. J Autism Dev Disord. 2015;.
Enhanced basic perceptual discrimination has been reported for pitch in individuals with autism spectrum conditions. We test whether there is a correlational pattern of enhancement across the broader autism phenotype and whether this correlation occurs for the discrimination of pitch, time and loudness. Scores on the Autism-Spectrum Quotient correlated significantly with the pitch discrimination (r = -0. 51, p < 0. 05) and the time-interval discrimination (r = -0. 45, p < 0. 05) task that were based on a fixed reference. No correlation was found for intensity discrimination based on a fixed reference, nor for a variable reference based time-interval discrimination. The correlations suggest a relationship between autistic traits and the ability to form an enhanced, stable and highly accurate representation of auditory events in the pitch and time dimensions.