Do not exceed the word length. Critically evaluate the evidence why this might be so. Psychobiological risk factors for vulnerability to psychostimulants in human adolescents and animal models. Discuss this by reviewing the likely mechanisms for those rhythms that have been characterised as socially entrained. Phase response curves for social entrainment .
Social contact synchronizes free-running activity rhythms of diurnal palm squirrels.
Critically examine the evidence that rats with lesions of the basal forebrain cholinergic system provide a useful model of Alzheimer's disease. Intact spatial learning following lesions of basal forebrain cholinergic neurons. In attempts to understand the dementia present in diseases such as Alzheimer's disease and clinical depression, behavioural neuroscientists have traditionally tended to concentrate on neuronal dysfunction. Recent evidence suggests that glia cells may play a more central role than previously believed. Discuss, reviewing relevant theoretical positions and experimental evidence.