Date of Thesis
The ability to integrate multisensory stimuli is variable amongst individuals and corresponds to one's ability to bind temporally proximate audio and visual stimuli (Stevenson, Zemstov, & Wallace, 2012). In addition, multisensory integration and temporal binding are affected in those with autism spectrum disorder (Foss-Feig et al., 2010; De Pape et al., 2012). Further, temporal binding is variable within an individual as a function of the types of stimuli being perceived (Dixon & Spitz, 1980). Previous research has uncovered a relationship between sub-clinical ASD-like social traits and temporal binding windows; however, this line of research has not investigated whether ASD-like social traits have differing effects on temporal binding for various modes of stimuli. In this study, we investigate the impact of ASD-like social traits on temporal binding windows (TBW) for three modes of audio-visual stimuli: flash-beep, hammer-nail, and speech. TBWs were found by presenting a subject with a range of stimulus onset asynchronies for each form of stimuli. The subjects were then administered a social responsiveness scale test to determine their ASD-like traits. Although, there was no correlation between subclinical ASD-like traits and increased TBW for any of the stimuli domains, a correlation was observed amongst the TBWs for the three stimuli modalities. These results support a stimulus general account of multisensory perception. Future work will look to address the explanations for a lack of correlation between subclinical ASD-like traits and TBW width.
Temporal Binding Window, Multi-Sensory integration, Perception, Sensory integration, Stimulus onset asynchronies, Autism, Autism spectrum disorder, Stimuli modalities, Stimuli types
Honors Thesis (Bucknell Access Only)
Bachelor of Science
Wellington, Ian James, "Hammer Time: Audio-Visual Integration Across Stimuli Domains" (2015). Honors Theses. 301.