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Flashcards in Limbic system Deck (15):
1

Papez circuit

Subiculum => mammillary body => anterior thalamic nucleus => cingulate gyrus => entorhinal cortex => hippocampus

2

Cholinergic neurons from which structures travel back through the fornix to the hippocampus?

Medial septal nuclei & diagonal band of Broca

2

Kluver Bucy syndrome

Behavioral disturbance following B anterior lobe ablation in monkeys; characterized by hyperorality, loss of normal fear, visual agnosia, placidity, hypersexuality, & hyperphagia

4

Functions of the limbic system

HOME: homeostasis, olfaction, memory, emotion

4

3 parts of the hippocampal formation

Dentate gyrus, hippocampus, subiculum

4

Limbic cortex includes

Parahippocampal gyrus, cingulate gyrus, medial orbitofrontal cortex, temporal pole, anterior insula

6

Nucleus basalis of Meynert

Part of the basal forebrain; contains cholinergic neurons & is major site of degeneration in AD

7

3 main nuclei of the amygdala

1) Corticomedial - involved in olfaction/appetitive states 2) Basolateral - direct & indirect connections to diverse cortical areas, basal forebrain, medial thalamus 3) Central nucleus - connects w/ hypothalamus & brainstem, important in autonomic control

7

The amygdala plays a crucial role in modulating neural impact of sensory stimuli on each of which 3 factors?

Hedonistic value, acquired associations, motivational state

8

Hippocampal lesions result in

Dissociation between explicit learning of new experience and implicit-procedural learning

10

Functions of the amygdala

Functions in emotional, autonomic, & neuroendocrine circuits of the limbic system

11

Entorhinal cortex

Serves as major input & output relay between association cortex & hippocampal formation

13

3 main targets of axons travelling through the fornix

Medial & lateral mammillary nuclei, lateral septal nucleus, anterior thalamic nucleus

14

Piriform cortex

Primary olfactory cortex; interconnected with the hypothalamus

15

Seizures involving the amygdala & adjacent cortex lead to

Emotions of fear & panic