José Salomão Schwartzman1, Renata de Lima Velloso2, Maria Eloísa Famá D'Antino1, Silvana Santos3. 1. Universidade Presbiteriana Mackenzie, São Paulo, SP, Brasil. 2. Clínica de Transtornos do Espectro do Autismo, Universidade Presbiteriana Mackenzie, São Paulo, SP, Brasil. 3. Associação Brasileira de Síndrome de Rett de São Paulo, São Paulo, SP, Brasil.
Abstract
OBJECTIVE: To compare visual fixation at social stimuli in Rett syndrome (RT) and autism spectrum disorders (ASD) patients. METHOD: Visual fixation at social stimuli was analyzed in 14 RS female patients (age range 4-30 years), 11 ASD male patients (age range 4-20 years), and 17 children with typical development (TD). Patients were exposed to three different pictures (two of human faces and one with social and non-social stimuli) presented for 8 seconds each on the screen of a computer attached to an eye-tracker equipment. RESULTS: Percentage of visual fixation at social stimuli was significantly higher in the RS group compared to ASD and even to TD groups. CONCLUSION: Visual fixation at social stimuli seems to be one more endophenotype making RS to be very different from ASD.
OBJECTIVE: To compare visual fixation at social stimuli in Rett syndrome (RT) and autism spectrum disorders (ASD) patients. METHOD: Visual fixation at social stimuli was analyzed in 14 RS female patients (age range 4-30 years), 11 ASD male patients (age range 4-20 years), and 17 children with typical development (TD). Patients were exposed to three different pictures (two of human faces and one with social and non-social stimuli) presented for 8 seconds each on the screen of a computer attached to an eye-tracker equipment. RESULTS: Percentage of visual fixation at social stimuli was significantly higher in the RS group compared to ASD and even to TD groups. CONCLUSION: Visual fixation at social stimuli seems to be one more endophenotype making RS to be very different from ASD.
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