According to the unified model of vision and attention, encoding of landmark information by the dorsal visual stream elicits rapid, non-conscious, exogenous orienting towards useful visual locations.
In contrast, encoding of symbolic information by the ventral visual stream is believed to elicit a slower form of orienting, often termed endogenous. Hence, the model proposes a simple mapping between two-mechanism theories of attention-shifting and dual stream models of vision.
After introducing the model, three sources of supporting evidence will be described. These are:
- Studies demonstrating correspondence between behavioural properties of orienting in landmark and symbolic attentional cueing tasks, and known physiological characteristics of the dorsal and ventral visual streams;
- Electrophysiological studies using high-density EEG and source localisation to examine early activation in the dorsal and ventral visual streams during attentional cueing tasks;
- Evidence from single case studies of attentional performance following neurological damage affecting the ventral and dorsal visual streams.
In addition, recent evidence suggesting that the model requires revision will be described, and potential applications of our approach will be discussed.
|Date||Wednesday, 11 August 2021|
|Time||11:30am - 12:30pm|
|Audience||Public,Allied health professionals,Alumni,Postgraduate students,Undergraduate students,Staff|
|Event Category||Health Sciences|
|Location||Barnett Lecture Theatre, Dunedin Hospital, Dunedin|
|Contact Name||Brain Health Research Centre|
|Contact Phone||+64 3 479 5643|