emotion Flashcards
what is emotion?
a feeling you experience
how can we study emotion?
using human or animal studies
what is meant by manifestation of emotions?
how emotions present on your face - other people can tell how you feel based on the manifestation of your emotions
what is the maze experiment and what does it show?
maze with 2 open and 2 closed arms
- normally, the mouse would feel most secure in the closed arms and it spends most of its time there
- the time the mouse spends in the closed vs open ends gives an indication of how fearful it is
- but, injecting it with diazepam causes it to spend more time in the open ends
what is shown by the forced swim test?
- beaker filled with water, place mouse in it
- mouse will swim for 5-6 mins, then come to an immobilisation point where it doesn’t want to anymore
- the immobilisation point is linked to depressive-like behaviour
- mouse withdrawn from opioids has more depressive-like behaviour
what does the 3-chambered box show?
measures social behaviour
box with 3 interconnected chambers, put a mouse in 1 cage in left chamber and an object in the other in right chamber, and place mouse in the chamber and see where it goes
-mice are social, so it will travel to the chamber with the caged mouse - spend more time in the social chamber
-mouse withdrawn from opioids spends equal time in social and object chambers
what are the 2 theories of emotion?
James-Lange
Cannon-Bard
explain the james-lange theory
experiencing emotions in response to physiological changes in the body
- first we manifest the emotion, then we get the feeling
- eg. seeing a snake, get sweaty palms and racing heart, and then we feel fear
explain the Cannon-Bard theory?
experiencing emotions independent of emotional expression
-experience the emotion, and then this induces manifestation
what is the brain region responsible for emotions?
Broca’s limbic lobe
Broca’s limbic lobe
limbus means border
- hippocampus
- cingulate gyrus (cingulate cortex diff to the rest of the cortex)
- medial surface temporal lobe
- also amygdala is involved in limbic system
what is the parahippocampal gyrus? and what is its role?
grey matter cortical region of the brain that surrounds the hippocampus
-hippocampus and para hippocampus gyrus primary function in memory
what is the cingulate gyrus and its function?
curved fold covering the corpus callosum
- role in complex motor control
- pain perception
- social interactions - mood
explain the papez circuit
look at diagram
neocortex - where emotional colouring takes place
from neocortex to the cingulate cortex, responsible for experiencing emotions
cingulate cortex signals to the hippocampus
hippocampus signals to the hypothalamus via the fornix - emotional expression happens
hypothalamus has ANS and endocrine activation, also activates anterior nucleus of the thalamus which signals to the cingulate cortex - restarts the cycle
cortex role
experiencing emotions
