Examine one interaction between cognition and physiology in terms of behaviour. Evaluate two relevant studies. (22)

Examine (22) – Consider an argument or concept in a way that uncovers the assumptions and interrelationships of the issue.
Evaluate (22) – An appraisal by weighing up the strengths and limitations.



Cognition: Memory
Physiology in terms of behaviour: Amnesia due to brain damage
Interactions: Retrieval and encoding of memory

The case study of Clive Wearing (Brain damage)
Description
  • Suffered damage in Hippocampus due to a contraction of a virus.
  • His disease left him with extensive brain damage (parts of his temporal lobes).
  • Suffers from Retrograde and Anterograde amnesia.
  • MRI scanning show damage to the hippocampus and some of frontal regions.
  • Episodic memory and some of his semantic memory are lost.
  • He can still play piano, conduct music and remember his wife.
  • He still has his implicit memory including his emotional memory for his wife.
[E]
  • Ecological validity: High, study of a real life case.
  • Low potential ability to generalise because cases are individual.
  • Ethics: Patient’s name was disclosed under consent.


Milner and Scoville- The Case Study of HM
Description
  • HM suffered from epilepsy.
  • Went through lesioning to remove temporal lobe.
  • Surgeon accidentally removed parts of the Hippocampus (responsible for LTM retrieval).
  • Caused anterograde and retrograde amnesia.
  • Retrograde amnesia only affected memory up to 11 years before surgery.
  • He can remember things 12 years before the accident.
  • Discovered that the cortex and hippocampus is connected and years in first grade would not be fully consolidated until first year in sophomore.
  • Emotional memory was intact, at the mention of the death of his favourite uncle, he experienced distress.
[E]
  • Ecological validity: High, study of a real life case.
  • Low potential ability to generalise because cases are individual.
  • Ethics: Patient’s name was kept confidential until he died.