Unformatted text preview: trograde = intact. retrograde amnesia is extremely
rare, and generally does not occur by itself, if it does, it
generally occurs due to a mental disorder. But do get
Anterograde and retrograde together. Anterograde Amnesia!
Basketball Player David Generally anterograde amnesia due to lost of medial temporal
lobe. The question is medial temporal lobe responsible for?
Encoding and retrieval
If retrograde would have problems with retrieval. MTL can't be
for storage because then all the knowledge of your life would
be lost, so it is believe it is involved in encoding, and then
stored elsewhere in the brain, and other mechanism are there
for retrieving it. Patients that have partial retrograde amnesia
(generally right before the traumatic event). That period of time
right before that is lost perhaps was not consolidated in the
lobe. We know that initial memories are very unstable and
disppersed throughout the brain. . Anterograde & Retrograde Amnesia!
Working memory and procedural are
intact Theory of Multiple Memory Systems!
Memory is not a single brain system, but multiple systems with different psychological
functions and different underlying brain structures.!
Different memory systems
with different functions in
different underlying brain
regions. Need to have
dissociations to show this
is the case and there are
double dissociation is
many of these areas.
These patients lead to the
theory of multiple modal
memory systems. Squire & Zola (1996) Proceedings of the National Academy of Sciences The most well known of
these theories is this
model; the distinction here
is it starts off with long
term memory and short
term memory (working
memory). Then in term of
long term memory there
are 2 different systems
Declarative memory: the
kind of memory that we
tend to think about,
semantic memory, things
about the worlds, facts
about the world. Encoded
by medial temporal lobe
Non Declarative: Things you don't have to think about; very unconsci...
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- Fall '11
- temporal lobe, medial temporal lobe, memory impairment, different underlying brain