biopsych

Question 1

One diff between EEGS and ERPS

Answer 1

EEG is a recording of general brain activity usually linked to states such as sleep or arousal whilst ERPS are elicited by specific stimuli

Question 2

sam working night shift
difficulty sleeping in day
worried wont be alert
Use knowledge of endog and exog to explain sams experience

Answer 2

Endogenous pacemakers are internal biological rhythms
Exogenous zeitgebers are external factors-light
Moving to the night shift means pacemakers try to impose inbuilt rhythms of sleep but are now out of sync with zeitgeber of light.
Disruption of biological rhythm has been shown to lead to disruption of sleep patterns inc anx decreased alertness

Question 3

Outline the structures and processes involved in synaptic transmission

Question 4

What is it meant by hemispheric lateralisation

Answer 4

The hemispheres of the brain

Question 5

Explain how unusual beh in a split brain patient could be tested

Answer 5

Present an word to their left visual field then ask them to say and draw what they saw

Question 6

Diff between ultradian and infradian

Answer 6

Infradian are longer than 24 hours e.g menstrual cycle whereas ultradian last under 24 hours e.g stages of sleep.

Question 7

Two key findings of sperry

Answer 7

When a patient was presented with an image on the right visual field they were able to describe it or draw it
However when image presented to left vf they couldn’t describe or draw but could pick out a related object with their left hand