Attention 2

Question 1

Hemispatial neglect syndrome

Answer 1

Damage to right inferior parietal cortex. Attention deficit; unable to attend to left field. Can be fixed but extinction. With two stimuli right one dominates.

Question 2

Balint’s syndrome

Answer 2

Damage to both sides of parietal cortex and occipital cortex. Simultanagnosia (only one object), optic ataxia (difficulty pointing to object) and oculomotor apraxia(difficulty controlling eye movement).

Question 3

Sprague effect

Answer 3

Neglect from parietal lesions. Imbalance of activity.

Question 4

Attention control regions

Answer 4

Frontoparietal network, insular cortex regions, anterior cingulate cortex.

Question 5

Temporoparietal junction (TPJ)

Answer 5

Exogenous attention. Stimulus driven/reflexive shifts.

Question 6

Visual search

Answer 6

Looking for target between distracters. Conjunction of features make it harder

Question 7

Feature integration theory

Answer 7

Organised into maps of features of stimuli.

Question 8

Binding problem

Answer 8

Illusory conjunction; subjects tendency to report stimulus with feature a and b when both are present in array.

Question 9

Guided search

Answer 9

Two components determine where attention is give. Map of stimulus feature; saliency maps. Map of top-down influence depends on prior knowledge

Question 10

Mesulam’s model

Answer 10

Frontal component, Parietal component and limbic component.