EXSS2025 Lecture Notes - Lecture 12: Stimulus Modality, Encoding Specificity Principle, Iconic Memory
22 Aug 2018
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The case of patient hm henry molaison (1926-2008) Post-op: epilepsy controlled, seizures stopped, but severe memory impairment, forgot daily events nearly as fast as they occurred. Couldn"t commit info to ltm: no intellectual loss or perceptual disorder - iq & vocabulary above average, psychiatrically normal (emotionally stable). Amygdala removed: remarkable capacity for sustained stm attention, hippocampus = memory consolidation, can"t make long term memories without it (cid:523)episodic, could have motor memories but not factual memories different storage locations events etc. Experience with hm: no continuity from day-day, hour-hour, or if distracted, even from min-min. If you talked to him for 15 minutes, he could tell you the same story 3 times using same words & intonation. 2 scientists studied him for years got to know him very well, but he never knew them: operation led to loss of autobiographical memory (post-surgery), general remembering of public events prior surgery, but could learn new motor skills.
