DANCEST 805 Lecture Notes - Lecture 19: Parietal Lobe, Frontal Lobe, Thalamus
Document Summary
Process of enhancing some and inhibiting other bits of information. Attention in general: orienting to sensory events, detecting signals for focused processing, maintaining a vigilant/ alert state. Likelihood to notice certain elements increased if thoughts about elements are present first: endogenous attention, originates from within, bottom- up processing, stimulus causes attention, exogenous attention, originates from without. Occurs when: lots of simultaneously presented information, failures of selection in space, lots of information in a rapid stream, failures of selection in time. By-product of system that prevents unnecessary information overload. Dual-task interference: diminished accuracy/ reaction time when attention is divided. Neither originally explained attentional selection very well: analysis before bottleneck, or high/ low thresholds of activation for different words. Attention to objects inside and around spotlight, but not the rest. Concerns role of attention in selecting and building complex info. Disjunctive search: target differs from other objects by one feature, preattentive, all objects are scanned parallel.
