Cortex and Hippocampus Flashcards
1
Q
Primary Cortex
A
- unimodal
- serves a single behavioral function
2
Q
Secondary Cortex
A
- unimodal
- association for primary corticies
3
Q
Tertiary Cortex
A
- heteomodal
- integrates info from secondary corticies
4
Q
Quaternary Cortex
A
- heteromodal
- integrates info from tertiary cortices
5
Q
Bottom Up Processing of Perception: Acetylcholine
A
- acetylcholine
- cholinergic populations in N. basalis and pedunculopontine tegmental nucleus
6
Q
Bottom Up Processing: Norepinephrine
A
- noradrenergic cells of L. ceruleus have general functions which bear on aspects of attention, learning, and arousal
- activity probably improves processing of salient events in diverse forebrain sites
7
Q
Dorsolateral Prefrontal Cortex (DLPFC) Damage
A
- unable to use intention (goals) to modulate attention (task at hand)
- failure to switch attention appropriately = perseveration
- undue requirement for environmental cues to accomplish task = environmental dependency
8
Q
Anterior Cingulate and Motivation
A
- the apathy syndrome
- dec. goal directed behavior
- dec. goal directed cognition
- dec. emotional experience and responsiveness
- abulia= lack of will
- akinetic mutism
9
Q
Orbitofrontal Cortex (VmOFC) Lesions
A
- impairment in ability to estimate the risk/reward associated with certain behaviors
- implies subconscious “gut feeling” about the implications of a given behavior
- implies suppression of behaviors felt to be excessively risky, esp. in social situations
10
Q
Prefontal Cortex Function
A
- enhancement and inhibition of: sensory inputs, emotional control, motor control
- short term modulation: modulation of effective connectivity
- long term modulation: modulation of synaptic strengths
11
Q
Hippocampus
A
- critical for episodic memory
- spatial memory, navigation, location
- associative networks
- integrates parallel streams of spatial and non spatial informtation: CA3
12
Q
Hippocampus Schaeffer Collaterals
A
-CA3 -> CA1
13
Q
Mossy Fibers
A
-dentate -> CA3
14
Q
Perforant Path
A
-entorhinal -> dentate
15
Q
CA3 Autoassociation
A
-CA3 -> CA3
