Neurologically in H.M.'s case

H.M.'s inability to form new memories was caused by the damage done during his surgery primarily due to hippocampal removal leading him unable remember anything after his operation due inability encode store , consolidate permanent memories brain . Even more interesting , however , still managed learn other skills tasks such way around house ways solve puzzles . This made clear there multiple forms different kinds memory which helped inform current studies regarding separate distinct systems responsible for each type information processing . The neurological reasons behind H.M.'s ability acquire new knowledge despite lack long term recall stem from spared areas within brain's frontal cortex regions use procedural implicit learning stored subconsciously allowing person repeat certain processes without explicit understanding why they doing so while lacking explicit conscious recollection them learned things before much same motor movements when playing sport example tennis golf etcetera working together neurons pathways aid development skills tasks regardless affected condition patient’s ability store retrieve consciously remembered facts events . H.M.'s case has been instrumental guiding research fields memory today not only because provided insight into various types memory processes involved but also because mistakes made over years treating patients like him brought attention importance ethical considerations surrounding neuroscientific research generally speaking . Many doctors researchers seeking find cure epilepsy carried out similar procedures unfortunately resulting dire consequences those operated upon thus teaching us must be careful when conducting experiments humans considering potential catastrophic outcomes if improperly done not properly monitored ...

Sample Solution

The case of Henry Molaison, otherwise known as H.M., is a well-known case in the study of memory. In 1953, at the age of 27, H.M. underwent an experimental surgery to treat his epilepsy where portions of both medial temporal lobes on either side were removed, including the hippocampus and amygdala which are highly associated with memory processing and formation. Due to this procedure, H.M was no longer able to form new memories after that point although he could still recall some pieces from his past up until then (retrograde amnesia). He also experienced difficulty recalling words or even how he got somewhere despite being able to draw a map based on what it looked like (anterograde amnesia).