Bio Studies Flashcards
1
Q
HM Milner
LoF
A
- HM car accident when he was 7
- Epileptic seizures 10-27 progressively worse
- Surgery removing tissue from the medial temporal lobe, including hippocampus (consolidation of memory from short-term to long-term)
- Milner studied HM until 2008, aim to understand the effects of the surgery
- Suffered primarily from anterograde amnesia - could not remember faces of people he met after surgery
- Retrograde amnesia improved - he only had problems remembering the period of one year before the operation
- Could not acquire new episodic (event memory) or semantic (general knowledge)
- Could form a cognitive map (spatial memory), different encodement from episodic and semantic memory
- could retain info for a while if rehearsed, but forget afterwards
- capacity for working memory (conversation requiring minimal level of retention) and procedural memories (mowing a lawn)
- hippocampus had most damage as seen through an MRI
2
Q
Draganski 2004
Neuroplasticity
A
- aim is discover whether structural differences in the brain could be found through brain imaging technology - MRIs
- 24 participants, 21:3 m:f
- first scan - no notable difference
- division into two groups of 12
- first group, minimum 60 second practice basic juggling during 3 months
- second group no change
- new MRI after three months
- difference in size of two areas between the two grousp
- jugglers stop practice, another MRI in three months
- difference notable but smaller
- difference between the second scan caused by an increase in volume in areas associated with visually detected movements
- practice strengthened neural connection
