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Jason Braithwaite

Behavioural Brain Sciences Centre
University of Birmingham
School of Psychology
Birmingham, B15 2TT England
Office phone:
Office fax:

Email: jjb839@bham.ac.uk
Home page: http://www.wjh.harvard.edu/~viscog/change/




Change Detection Research Interests
Research interests: My central research interests are in the general field of visual cognitive neuroscience. More specifically I am interested in the nature and form of representation and the role of selective attention in visual awareness. For my thesis I am currently exploring issues of selection (prioritisation / ignoring and inhibition / grouping, etc) that are relevant to both 'change-blindness' and 'inattentional blindness'. I have been using visual search paradigms such as the visual marking paradigm of Watson & Humphreys (1997). This paradigm allows me to use multiple onsets to mask change and influence search performance. My results suggest that contrary to popular opinion the explicit failure to detect changes does not imply a failure to represent that visual information in some way. Furthermore, in line with other researchers using different paradigms we have found that if targets are similar (e.g. in terms of colour group) to other items one is currently trying to ignore then there is a large an impressive increased degree of 'blindness' (indicated by increased search latency) for locating that target. We currently belive that these findings can be distinguished from an onset capture account of search performance and suggest that the data reflect the selective influence of what one is currently ignoring on what one is currently trying to search.

Other Research Interests
Applications of brain imaging (ERP / fMRI / MEG ) and transcranial magnetic stimulation (TMS)in relation to selective attention and awareness, Patient deficits in visuo-spatial processing (e.g. Neglect), how both lower and higher visual areas of the brain may be implicated in certain visual disturbances (e.g. delusions / distortions / hallucinations) and what such instances can tell us about the organisation of certain visual cognitive processes in normal brains, Exploring the potential relevance of the frontal 'mirror system' in relation to delusions of the self / self image and space in psychosis and schizophrenic hallucinations, Attentional mechanisms in hallucination.

Change Detection Publications




Last updated: January 3, 2001
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