PSY372H5 Lecture Notes - Lecture 8: Substantia Nigra, Anterograde Amnesia, Temporal Lobe
Document Summary
Amnesia: most often caused by brain trauma: affects memory function, not other functions. Alzheimer;s & parkinsons: age of onset are age 60 or older. Alzheimer"s: classified as a memory disorder, not a movement disorder. Huntington"s disease: memory problems are prevalent, movement: rapid and jerky. Parkinson"s disease: movement: more having to do with posture (tremoring, rigidity) Localized in the hippocampus and medial temporal lobe (regions are involved in memory) Anterograde amnesia and retrograde may be both prevalent at the same time. Right: alzheimer brain (progressed alzheimers) with low prefrontal volume: changes to ventricles (they are enlargened, volume of language regions is altered (sulci goes in deeper, hippocampal volume is decreasing. Alzheimers and parkinsons both have similar age of onset, and both are neurodegenerative (worsens over time) Substantia nigra is part of superior colliculus. Attending to relevant cues during encoding increases the likelihood of later retrieval. Strength of association between cue and target: the stronger the association, the better the retrieval.
