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ERIC Number: EJ1042903
Record Type: Journal
Publication Date: 2014-Nov
Pages: 7
Abstractor: As Provided
Reference Count: 45
ISSN: ISSN-0162-3257
Oblique Orientation Discrimination Thresholds Are Superior in Those with a High Level of Autistic Traits
Dickinson, Abigail; Jones, Myles; Milne, Elizabeth
Journal of Autism and Developmental Disorders, v44 n11 p2844-2850 Nov 2014
Enhanced low-level perception, although present in individuals with autism, is not seen in individuals with high, but non-clinical, levels of autistic traits (Brock et "Percept Lond" 40(6):739. doi:10.1068/p6953, 2011). This is surprising, as many of the higher-level visual differences found in autism have been shown to correlate with autistic traits in non-clinical samples. Here we measure vertical-oblique and, more difficult, oblique-oblique orientation discrimination thresholds in a non-clinical sample. As predicted, oblique-oblique thresholds provided a more sensitive test of orientation discrimination, and were negatively related to autistic traits (N = 94, r = -0.356, p < 0.0001). We conclude that individual differences in orientation discrimination and autistic traits are related, and suggest that both of these factors could be mediated by increased levels of the inhibitory neurotransmitter GABA.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A