brain, physio,homeostasis Flashcards
Role of reticular formation
arousal , alertness, awakening brain to process info
ascending and descending
descending= tone down
Why does the amygdala and sub cortical emotion often over power cognition
More information going out of amygdala than in
Hypothalamus regulates
Endocrine sysetm and autonomic NS- sympathetic and parasympathetic
Eating drinking mating
SNS and PNS
SNS - fight or flight
PNS- rest and digest
Reward pathway/ addiction
DA produced in VTA , released by stimulation of NA ,
Striatum appraises stimuli,
wanting without liking occurs as reward is learned , wanting grows bc NA is hyper active
Role of basal ganglia, S. Nigra and Globus, candate nucleus and putamen
motivated action
Substantia nigra and globus prepare action
candate nucleus and putamen give rise to movement and coordinated action
____ cortex responsible for gut feelings
insular
Posterior insular cortex
monitors bodily changes in homeostasis
anterior insular cortex
subjective awareness of bodily changes
Location of PFC
behind forhead
Function of PFC
Goals , affect, striving
Explain pfc asymmetry
Right lobe is negative emotion dominant, left is positive emotion dominant.
People with dominant left lobes often seek reward or are impulsive
Dominant right are prone to depression, fear, internalizing
Oribitofrontal cortex is involved in______ gratifcation
delayed
OFC communicates top down to limbic system t/f
T- But sometimes is reciprocal as urges must overpower planning
Ventromedial PFC is responsible for? What happens when damaged
sensory and social cues, value of sensory reward
damaged VMPFC results in emotional and social impariment
