The role of spatial attention and action intention on action perception in visual processing

Yap, Say Keng (2012). The role of spatial attention and action intention on action perception in visual processing Honours Thesis, School of Psychology, The University of Queensland.

       
Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
YAPSayKeng4071thesis2012.pdf Thesis full text application/pdf 1.83MB 1
Author Yap, Say Keng
Thesis Title The role of spatial attention and action intention on action perception in visual processing
School, Centre or Institute School of Psychology
Institution The University of Queensland
Publication date 2012-10-10
Thesis type Honours Thesis
Supervisor Ross Cunnington
Total pages 128
Language eng
Subjects 1701 Psychology
Abstract/Summary The human visual system is closely linked with the motor system. Behavioural studies have shown that the linkage is bi-directional in the sense that information not only travels from visual cortex to the motor cortex, but also vice versa. However, electrophysiological studies have only recently begun to determine the extent of the relationship. This study examined the effect of spatial attention through planning actions on early neural processing in perceiving observed actions. This study manipulated spatial attention through planning to perform hand gestures with left or right hand. Visual images that were congruent or incongruent to the hand gestures were then presented on the left or right side of fixation point (left or right visual field) to manipulate attended or unattended locations. The event-related potential; N170, representing visual processing of hand gestures was examined on the parietal-occipital lobe on the left and right hemisphere of the brain for the effect of spatial attention by action planning on perception. It was found that the peak amplitude of N170 component differs significantly when processing congruency of the visual image of hand gesture presented with the hand gesture planned, based on the location of hand gesture image presented on the screen. It was also found that side of the hand used to perform actions had no effect on the peak latency and amplitude of N170 component. This study concluded that congruency is processed differently depending on brain hemisphere, and that spatial attention has no effect on the peak latency of early neural processing in perceiving observed actions.
Keyword Spatial attention
Action intention
Action perception
Visual processing

 
Citation counts: Google Scholar Search Google Scholar
Created: Mon, 11 Mar 2013, 11:57:25 EST by Mrs Ann Lee on behalf of School of Psychology