The observation that extinction is worse when identical, rather than different, stimuli are simultaneously presented to the ipsilesional and contralesional sides of the visual field indicates that
A)neglected stimuli do not undergo perceptual processing in the absence of focused attention.
B)neglected stimuli undergo perceptual processing in the absence of focused attention.
C)neglected stimuli can capture attention involuntarily.
D)neglected stimuli are often confused with stimuli that are successfully attended.

Question

Quizplus · Accepted Answer

The observation that extinction (neglect) is worse when identical stimuli are presented to both the ipsilesional and contralesional sides of the visual field suggests that neglected stimuli can undergo perceptual processing even without focused attention. This is because the two stimuli compete for processing resources, and the stronger stimulus (usually the ipsilesional one) dominates perceptual awareness, effectively "extinguishing" the weaker stimulus (the contralesional one) from awareness. This implies that even unattended stimuli can be processed to some extent, suggesting that the brain is able to extract basic features from stimuli without conscious awareness.

The Observation That Extinction Is Worse When Identical, Rather Than