Bio psychology Flashcards
what are the assumptions of the area
everything that is psychological is First physiological
Behaviour has a physical cause
What are the 3 causes of behaviour
the brain
Genes
Hormones
What is a hormone
A chemical produced in glands
What is the methodology of the biological area
Psychology should be studied as a science and use scientific processes eg brain scans
What is brocas area responsible for
Speech production - worked with a man who could only say the word tan
autopsy showed damage to the left frontal lobe
What is wernickes area responsible for
speech comprehension worked with patients whose speech was fluent but disordered autopsies showed damage to top of left hemisphere
What did severing the corpus callosum do
Stop seizures from epilepsy
What is the corpus callosum
A bundle of nerves that allows information to pass between the two hemispheres
What does the left side of the brain Control
Perception
Planning
Language
The right side of the brain
What does the right side of the brain Control
intuition
Creativity
Emotion
The left side of the body
What is the inferior frontal gyrus
area in frontal lobe that is in both hemispheres
Interpretation of facial expression generates appropriate response
Known as cool system
What does the ventral striatum do
area in the limbic system that is associated with Immediate choices and rewards
Responsible for behaviour and social interaction
what is the aim of sperrys study
to investigate the functions of the hemispheres in the brain and the effects of deconnection in split brain patients
what is the sample in sperrys study
11 split brain patients with their corpus callosum severed
1 male had the surgery 5.5 years before the study
1 female had the surgery years before the study and the rest had the surgery shortly before
what were the 2 types of test in sperrys study
visual and tactile
what was the set up in the visual tests
patients sat in front of a projector screen with one eye covered
point in the middle of the screen that they had to focus on word or image would appear on the screen for 1/10th of a second
images presented with a tachistoscope
what happened in the visual tests with the one image
if image displayed to right visual field they could say what they saw
if it went to left visual field they couldnt say what they say
matching object could be picked out from array with left hand because its linked to right hemisphere
what happened when two images displayed at same time
when images displayed to left and right fields they could only say what they had seen in the right visual field
if asked to draw what they had seen using left hand they draw what was displayed to left visual field because its linked to right hemisphere
when a nude image was shown to left visual field they would giggle and blush but not be able to say why
how were the tactile tests set up
participants sat in front of a screen with a gap underneath to put their hands through
what happened in the tactile tests
if p`s originally picked up an object with their left hand they could not retrieve it with their right hand but could find it with their left hand
if they were holding an object in their left hand they could not say what they were holding however they could name the object they were holding in their right hand \
what are the conclusions from sperrys study
provided evidence for lateralisation of brain function
however issues with sharing information between hemispheres is not a day to day issue in the real world as information in normally presented for more than 1/10th of a second
What happened in the marshmallow test
children sat in room with marshmallow in front of them and were told if they waited till the researcher came back they could have two
Researcher left for 15 minutes and when he came back 2/3 had eaten the marshmallow
What was the aim of caseys study
to investigate whether delay of gratification in childhood can predict delay of gratification in adulthood
What was the original sample in caseys study
562 students from Stanford University nursery four years old
59 agreed to do first experiment
Was was the sample from caseys second study
27 original participants
15 High
11 low
How many trials per run
160
How were trials presented to participants
pre programmed laptops sent to homes
How long was stimuli shown for
0.5s
What was the hot task
click when you see a happy face and not when you see a fearful face
What was the cold task
click when you see a male face and not when you see a female face
What was the results from the First experiment
no difference in reaction times
Both groups accurate on go no go tasks
Low delayers made more mistakes on hot than cool task
Which system more active in High delayers
inferior frontal gyrus
Which system more active in low delayers
ventral striatum
What was the set up in thefMRi scanner
screen to display task and a neuroscan 5 pad button for ps to react to stimuli
Which condition was completed in the scanner
only the hot one
How long were the gaps between the pictures shown in the scanner
2 to 14.5 seconds
What were the conclusions from caseys study
ability to delay gratification is a skill that is stable over a lifetime and has a biological cause
Also depends on stimuli
