Nueropsych Flashcards
Tripartite Attention Model
Arousal-ARAS, thalamus, cortex
Activation-basal ganglia
Effort-motivation (fontal lobe, limbic system)
Attention Modulation
Attention matrix
- domain-specific attentional porcesses
- domain-independent attentional processes (bottom-up[ARAS-no selectivty] or top-down[cerebral cortex-motivation, significance])
4 component attention model
Sensory Selective Attention
Attention capacity/focus
Sustained attention
Response selection & control
ARAS
alertness, arousal, sustained attention
Superior colliculus
directs attention to visual stimuli
thalamus
modulates arousal in cortex, selective attention
anterior cingulate gyrus
interface between subcortical and cortical regions
- selects correct response
- choose novel responses/complicated tasks
parietal lobe
right parietal lobe predominates for attentional mechanisms; second level of filtering out info, allocates attentional resources
frontal lobe
abstract responses, initiating/inhibiting responses
- frontal eye field: scanning
- orbital and medial regions inhibit movements
Default mode in attention
-inhibited during focused behavior
Posterior Cingulate Cortex-autobio memories, self
Medial prefrontal cortex(hippo)-appreciating what others feel
frontal eye fields
conscious eye gaze control, top-down control for vision
broca’s area
language production (speech and writing) frontal lobe, area 44
Major neuroanatomical regions involved in attention
ARAS, superior colliculus, thalamus, anterior cingulate gyrus, parietal lobe, frontal lobe, basal ganglia
Prefrontal
dorsolateral prefrontal-motor
orbitofrontal (ventral lateral/ventral medial)
-ant-secondary inforcers, post-primary reinforcers
Mesial frontal-initiation of movement
speech production
temporal (weirneicke’s area-comprehension), and frontal (broca’s-speech/writing production)
