Neuro Flashcards
James Lange theory of emotion
Physiological arousal firs (sympathetic division of ANS) adenosine released
Brain interprets it
James Lange theory of emotion strength is that it is supported by research into phobias
Shows that physiological arousal comes before fear
One weakness of the James Lange theory of emotion is that it is challenged by atheism Cannon Bard theory
Studies from the Cannon Bard theory show that embarrassment occurs at the same time as the physiological arousal. Decreases validity
Another weakness of the James Lange theory is that it may be too simple
The Two factor theory by Schadhter and singer suggests that we interpret the changes according to the social cues around us. Means not full complete knowledge
Hebbs theory
The brain is plastic
Synaptic connections become stronger the more they are used
It changes in response to new experiences
Learning produces an engram that becomes permanent through prolonged rehearsal
Which from groups of neurones that fire together which occurs as cell assemblies rewire
Penfield study
To investigate the function of the temporal lobe using the Montreal procedure
Operated on severely epileptic patients and during stimulate of conscious patients they experienced strong sense of deja vu as if they were experiencing the emotions but were aware fo reality
Interpretive cortex is an area of the brain storing personal meanings of previous events.
One strength of Penfileds study is that it was the same procedure in a controlled environment
So exact same area was stimulated increases validity
One weaknesss of Penfield study is that the sample may be hard to generalise
Patients were severely epileptic may not reflect normal brain structure
Another weakness of penfiel is that he obtained mixed results in later research
Interpretive cortex May nfl be as true as once though
Strength and weakness of CT scans
Quality is higher than traditional diagnosis
High levels of radiation and only produces still images
PET scan strength and weakness
Shows brain activity and localisation
Expensive and slightly unethical due to injection of radioactive substance
Strength and weakness of fMRI scans
Produces clear images without radiation
Expensive
Requires extreme still ness
Tulvings god, study aim and metho
To investigate whether episodic memories produce differ3nr brain flow patterns to that of semanti ones
Six participants injected with radioactive gold
Repeated measures ektj four episodic and four semantic
Monitored blood flow in PET scan
Tulvings gold study results and conc
Different blood flow in three out of six participants
Semantic in posterior cortex
Expisodic in frontal lobe
Episodic and semantic memories are localised and memory had a biological basis
One strength of tulvings gold study is that objective evidence was produced
This means based on solid scientific evidence from a scan they can not be faked