Lecture - limbic system Flashcards
1
Q
Broca
A
-Broca: ring of cortical areas (cingulate gyrus and hippocampus) in close connection with olfactory system
2
Q
james papez
A
-added mammillary bodies and thalamus to Brocas map
3
Q
Mclean
A
-amygdala, PFC, hypothalamus
4
Q
Limbic system
A
- cingulate gyrus
- thalamus
- hypothalaus
- amygdala
- hippocampus
- OFC
- mammillary bodies
5
Q
stress
A
- loss of control on its environment (uncertainty, not able to predict or influence its relevant environment
- acute
- chronic
6
Q
internal vs external behavior
A
- internal: physiological response
- external: behavioral
- > one wants to maintain homeostasis internal and external environment
7
Q
physiogical responses to stress
A
- autonomic NS (sympathetic system)
- > activation adrenals (medulla) -> adrenaline (fight flight)
- > 2 to 20 sec
- endocrine system
- over 20 secs, days, weeks, months
- Hypothalamus Pituitary Adrenal cortex (HPA - axis)
- > production of cortisol (produced in cortex of adrenals)
8
Q
ANS (2)
A
- sympathetic -> prepare for action
- parasympathetic -> prepare for rest
9
Q
Amygdala input/output
A
- basal lateral amygdala -> major input
- central -> major output
10
Q
..
A
- amygdala -> lateral hypothalamus -> spinal cord -> adrenaline
- amygdala paraventricular nucleus ->
11
Q
fear vs anxiety
A
Fear. phasic response to explicit aversive cues / stimuli
anxiety: tonic response to diffuse aversive stimuli -> associated with approaching potentially! dangerous situations
12
Q
anxiety brain structures
A
- medial PFC
- > cingulate cortex
- > ventral hippocampus
- > amygdala (BLA) -> basal lateral
13
Q
fear brain structures
A
..
14
Q
endocrine system
A
- over 20 secs, days, weeks, months
- Hypothalamus Pituitary Adrenal cortex (HPA - axis)
- > production of cortisol (produced in cortex of adrenals)
15
Q
Acute effects cortisol
A
- suppression of HPA axis ( negative feedback)
- mobilization of energy
- suppression of immunity (anti-inflammatory)
- behavioral inhibition/attention (medial PFC)
- motivation (orbitofrontal cortex, n. accumbens)
- memory (hippocampus)
