AS Biological Regions of the brain (Classic (SPERRY(1968)- Hemisphere…
Regions of the brain
Hemisphere disconnection and unity in conscious awareness
or lateralisation of function
below the translucent screen there was a gap so that pps could reach objects but not see their hands. Objects were then placed in either the pp's right/left hand or both hands. information about objects placed in the hand is processed by the right Hemisphere and vice versa
The participant, with one eye covered, centred his gaze on a fixed point in the centre of an upright translucent screen.
the image was projected at 1/10 of the second. This overcome information going to the wrong visual field.
Everything projected to the left of the central meridian of the central meridian of the screen is passed the LVF to the right hemisphere and vice versa (regardless of which eye is used)
No IV because the variable is naturally occuring. Split-brain/ not split-brain
ability to perform a variety of visual and tactile test
METHOD AND DESIGN
Quasi laboratory experiment - independent measures design
11 split-brain patient Opportunity sample
Split-brain patients have a lack of cross-integration where the second hemisphere does not know what the first hemisphere has been doing.
Split-brain patients seem to have two independent streams of consciousness, each with its own memories, perceptions and impulse ie two minds in one body
People with split brains have two separate visual inner worlds, each with its own train of visual images.
to investigate the effects of this deconnection and show that each hemisphere ha different functions; in other words, to map lateralisation of brain function and show that information in oneside of the brain is not accesible to the other side
Where as one side of the brain is dominant for certain actions and behaviours. Left hemisphere= language Right hemisphere= emotion & spatial awareness
the tissue joining the two hemispheres of the brain together
one of two regions of the brain. the brain is split into the left and right hemisphere (LH/RH)
each eye has a left and right visual field (LVF/RVF) which captures information to send to the brain
CASEY ET AL(2011)-
Behavioural and neural correlates of delay of gratification 40 years later
or localisation of function of the brain
METHOD AND DESIGN
Quasi laboratory experiment
IV is naturally occurring and cannot be manipulated. low dalyer/ high delayer
performance on the impulse control task
performance on the impulse control task and imaging results using fMRI
59 pps(23m, 36f)
32 high delayers, 27 low delayers
15 high delayers, 11 low delayers
resistance to temptation is relatively stable individual characteristics
Assess whether delay of gratification in childhood predicts impulse control abilities and sensitivity to alluring or social cues (happy faces) at behaviour and neural level when participants were in their 40s
Where different areas of the brain relate to particular behaviours and action
part of our limbic system associated with more immediate choices and reward
FMRI (FUNCTIONAL MAGNETIC RESONANCE IMAGING)
maps neural activity in the brain by imaging the change in blood flow related to energy use in the brain cells.