Publications [#302806] of Geraldine Dawson

Journal Articles

1. Murias, M; Webb, SJ; Greenson, J; Dawson, G (2007). Resting state cortical connectivity reflected in EEG coherence in individuals with autism.. Biol Psychiatry, 62(3), 270-273. [doi]
   (last updated on 2025/07/03)

   Abstract:
   BACKGROUND: Theoretical conceptions of autism spectrum disorder (ASD) and experimental studies of cerebral blood flow suggest abnormalities in connections among distributed neural systems in ASD. METHODS: Functional connectivity was assessed with electroencephalographic coherence between pairs of electrodes in a high-density electrode array in narrow frequency bands among 18 adults with ASD and 18 control adults in an eyes closed resting state. RESULTS: In the theta (3-6 Hz) frequency range, locally elevated coherence was evident for the ASD group, especially within left hemisphere frontal and temporal regions. In the lower alpha range (8-10 Hz), globally reduced coherence was evident for the ASD group within frontal regions and between frontal and all other scalp regions. The ASD group exhibited significantly greater relative power between 3 and 6 Hz and 13-17 Hz and significantly less relative power between 9 and 10 Hz. CONCLUSIONS: Robust patterns of over- and under-connectivity are apparent at distinct spatial and temporal scales in ASD subjects in the eyes closed resting state.