Distinguishing blocking from attenuation in visual selective attention.

ABSTRACT: Sensory information must be processed selectively in order to represent the world and guide behavior. How does such selection occur? Here we consider two alternative classes of selection mechanisms: In blocking, unattended stimuli are blocked entirely from access to downstream processes, and in attenuation, unattended stimuli are reduced in strength but if strong enough can still access downstream processes. Existing evidence as to whether blocking or attenuation is a more accurate model of human performance is mixed. Capitalizing on a general distinction between blocking and attenuation-blocking cannot be overcome by strong stimuli, whereas attenuation can-we measured how attention interacted with the strength of stimuli in two spatial selection paradigms, spatial filtering and spatial mo

SUBMITTER: Yigit-Elliott S 

PROVIDER: S-EPMC7106067 | biostudies-literature | 2011 Jun

REPOSITORIES: biostudies-literature