It has been assumed that the social deficits inherent in autism imply that individuals with the condition will be unable fully to appreciate the emotional content of music. My aim was to test this assumption, and to explore more widely the similarities and differences between the experience of music in the normal population and those with autism. My first study used musically-induced mood changes and a behavioural measure to show that music does indeed have a more than superficial effect on cognitive processes in a control group. The second study focused on high-functioning adults on the autism spectrum, using semi-structured interviews to investigate the part that music played in their everyday lives, concluding that autism is no bar to full appreciation of the emotional uses of music, though suggesting a degree of impoverishment in the language they used to describe the emotions. The final set of experiments compared control and autism group directly, using physiological (GSR) measures of arousal together with self-report of the emotions evoked by a set of musical items. Standardised questionnaires were used to measure alexithymia (difficulty in identifying and describing feelings) in individuals. Although the autism group experienced comparable levels of physiological arousal to music, they used fewer words than the control group to describe their emotional responses, a difference which correlated strongly with their level of alexithymia. My results are consistent with the hypothesis that in autism, the basic physiological and emotional component of their reactivity to music is functioning normally, but that their ability to translate these reactions into conventional emotional language is reduced, precisely in line with the extent of their alexithymia. These results suggest that the preserved ability of music to generate emotional arousal in autism may lead to clinical applications for the treatment of alexithymia in autism and other conditions.

Thesis (Ph.D.)--Indiana University, Dept. of Psychology, 2006. / Source: Dissertation Abstracts International, Volume: 67-01, Section: B, page: 0570. Adviser: James Townsend. "Title from dissertation home page (viewed Feb. 22, 2007)."

Thesis (PH.D.) -- Syracuse University, 2004. / "Publication number AAT 3149058."

Thesis (PH.D.)--Syracuse University, 2003. / "Publication number AAT 3081624."

Thesis (Ph.D.)--Indiana University, Dept. of Psychology, 2005. / Source: Dissertation Abstracts International, Volume: 66-12, Section: B, page: 6941. Adviser: David B. Pisoni. Title from dissertation home page (viewed Oct. 11, 2006).

Thesis (Ph. D.)--Ohio State University, 2005. / Title from first page of PDF file. Document formatted into pages; contains ix, 120 p.; also includes graphics. Includes bibliographical references (p. 115-120). Available online via OhioLINK's ETD Center

A wide literature of predominantly behavioural experiments that use Stimulus Response Compatibility (SRC) have suggested that visual action information such as object affordance yields rapid and concurrent activation of visual and motor brain areas, but has rarely provided direct evidence for this proposition. This thesis examines some of the key claims from the affordance literature by applying electrophysiological measures to well established SRC procedures to determine the verities of the behavioural claims of rapid and automatic visuomotor activation evoked by viewing affording objects. The temporal sensitivity offered by the Lateralised Readiness Potential and by visual evoked potentials P1 and N1 made ideal candidates to assess the behavioural claims of rapid visuomotor activation by seen objects by examining the timecourse of neural activation elicited by viewing affording objects under various conditions. The experimental work in this thesis broadly confirms the claims of the behavioural literature however it also found a series of novel results that are not predicted by the behavioural literature due to limitations in reaction time measures. For example, while different classes of affordance have been shown to exert the same behavioural facilitation, electrophysiological measures reveal very different patterns of cortical activation for grip-type and lateralised affordances. These novel findings question the applicability of the label ‘visuomotor’ to grip-type affordance processing and suggest considerable revision to models of affordance. This thesis also offers a series of novel and surprising insights into the ability to dissociate afforded motor activity from behavioural output, into the relationship between affordance and early visual evoked potentials, and into affordance in the absence of the intention to act. Overall, this thesis provides detailed suggestions for considerable changes to current models of the neural activity underpinning object affordance.