Task 3 Already Passed

Describe 2 key findings of Sperry's research into hemispheric lateralisation. (4 marks) {Ans: When a picture of an object was shown to a patient's right visual field, the patient could easily describe what was seen but couldn't pick it out or draw it. Also, patients were able to select matching objects with their left hand but they could not attach verbal labels.}Explain what is meant by hemispheric lateralisation. (3 marks) {Ans: Hemispheric lateralistaion means that the hemispheres of the brain are functionally different and that certain mental processes and behaviors are mainly controlled by one hemisphere. For example, language is lateralised to the left hemisphere.}Outline the findings of research into functional recovery after trauma. (4 marks) {Ans: Phillips (2006) found that Terry Wallis' brain had gradually developed new pathways and completely novel anatomical structures to re-establish connections. This compensated for the brain pathways he lost in the accident that left him in a coma for 19 years. This supports functional recovery because the plasticity of the brain allowed for new neural networks.}Describe key endogenous pacemaker and exogenous zeitgeber influence on the human sleep-wake cycle. (4 marks) {Ans: The suprachiasmatic nucleus (SCN) is believed to be a