Week 8: Object-Based Attention and Cognitive Neuropsych.

Object-Based Attention

Object-Based Attention

Attention directed at specific objects rather than space.

Space-Based Attention

Attention focused on specific spatial locations.

Rock & Gutman (1981)

Study showing memory differences for attended vs unattended objects.

Negative Priming

Slower response to previously ignored stimuli.

Tipper (1985)

Research demonstrating negative priming with colored figures.

Duncan (1984)

Study showing better accuracy for attributes of the same object.

Same Object Advantage

Faster reaction times for stimuli in the same object.

Occluding Bar Effect

Same object advantage persists despite occlusion.

Fusiform Face Area (FFA)

Brain region activated when viewing faces.

Parahippocampal Place Area (PPA)

Brain region activated when viewing houses.

Visual Neglect

Inability to attend to stimuli on one side.

Top-Down Attention

Voluntary focus on specific stimuli or tasks.

Bottom-Up Attention

Reflexive response to new stimuli in environment.

Dorsal Pathway

Visual pathway for motion and spatial location.

Ventral Pathway

Visual pathway for form and color recognition.

Extinction

Failure to perceive one stimulus when two are present.

Balint Syndrome

Inability to focus on multiple objects simultaneously.

Inhibition of Return (IOR)

Slower response at previously attended locations.

Cognitive Neuropsychology

Study of cognitive processes through brain damage effects.

Cancellation Test

Assessment for visual neglect by marking stimuli.

Posner's Attention Model

Engagement, disengagement, and shifting of attention.

Simultaneous Identification

Identifying multiple stimuli at the same time.

Late Selection Theory

Only one signal processed at conscious level.

Neuroimaging Evidence

fMRI shows selective activation for different objects.