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I am a Lecturer of Vision Science currently based at Aston University. My research interests involve discerning the functions of motion-sensitive areas within the human brain; particularly those involved in perception of optic flow.
Two subdivisions of human V5/MT+; one located posteriorly (MT/TO-1), the other more anteriorly (MST/TO-2), were identified in human participants using functional magnetic resonance imaging (fMRI) on the basis of their representations of the ipsi- versus contra-lateral visual field. These subdivisions were then targeted for disruption by the applica...
Human neuropsychological and neuroimaging studies have raised the possibility that different attributes of optic flow stimuli, namely radial direction and the position of the focus of expansion (FOE), are processed within separate cortical areas. In the human brain, visual areas V5/MT+ and V3A have been proposed as integral to the analysis of these...
Previous experiments have demonstrated that transcranial magnetic stimulation (TMS) of human V5/MT+, in either the left or right cerebral hemisphere, can induce deficits in visual motion perception in their respective contra- and ipsi-lateral visual hemi-fields. However, motion deficits in the ipsi-lateral hemi-field are greater when TMS is applied...
Neuropsychological studies (Beardsley and Vaina, 2005) have shown that patients with damage to V5/MT+ are unable to identify the direction of radially moving stimuli, but maintain their ability to identify the focus of the expansion (FOE). This suggests that FOE position is signalled by neural activity outside V5/MT+ and another motion area, V3A, h...
We present a database of high-definition (HD) videos for the study of traits inferred from whole-body actions. Twenty-nine actors (19 female) were filmed performing different actions—walking, picking up a box, putting down a box, jumping, sitting down, and standing and acting—while conveying different traits, including four emotions (anger, fear, h...