An Electrophysiological Investigation of Semantic Incongruity Processing by People with Asperger’s Syndrome
ABSTRACT The aim of this study was to investigate whether a physiological measure of impaired use of context could be obtained in people
with Asperger’s Syndrome (AS). The experimental paradigm employed was the use of electroencephalography to measure the detection
of semantic incongruity within written sentences, as indexed by an N400 event-related potential. Whilst the seven controls
appropriately demonstrated N400 potentials only to semantically incongruent stimuli, the seven participants with AS inappropriately
demonstrated N400 potentials to congruent stimuli. These results are compatible with the possibility that the participants
with AS did not use the context within sentences to predict the final word of the sentences.