L11-14 Flashcards
The patient H.M. underwent an experimental surgical procedure of removing his … lobe to relieve epileptic seizures
TEMPORAL
HM’s surgery resulted in severe … deficits
MEMORY
Inability to recognize objects … is one of memory functions HM had RETAINED (kept)
Agnosia
HM could acquire and express NEW skills and they IMPROVED, meaning he was able to update his … network of … connections
NEURAL and SYNAPTIC
Skills such as
- reading words presented backwards
- mirror drawing
improved, even though HM could NEVER … that he had been asked to perform
REMEMBER
HM’s memory loss is known as …
AMNESIA
… and prolonged study on HM tell us about what MEMORY is and how the brain manages to RECORD our PAST experiences
AMNESIA
… demonstrates a degree of functional INDEPENDENCE from other cognitive capacities
Amnesia
Memory is …
- the ability to RECALL or … previous experience
- … representation of previous experience
RECOGNIZE and MENTAL
HM’s surgery removed the BILATERAL MEDIAL … lobe including the …
TEMPORAL and HIPPOCAMPUS
Short term memory (=working memory) is considered as an …
Executive function
… cortex is mainly involved in working memory
Prefrontal
Various cortical and subcortical areas
- hippocampus
- limbic system
- basal ganglia
are involved in … memory
Long term
Implicit (Unconscious; Procedural) and Explicit (Conscious; Declarative) memories are 2 categories of … memory
Long term
Procedural memory
- demonstrates … such as a skill or conditioned response
- … events when facilitated
KNOWLEDGE and RECALL
Declarative memory
- recall or … SPECIFIC info
- often affected in AMNESIA
Retrieve
Bottom up processing is for … information where info is encoded in the SAME way it was perceived
Implicit
What are 2 ways of ENCODING memories?
BOTTOM-UP and TOP-DOWN
Top down processing is for … information where info is recognized BEFORE it is encoded
Explicit
Tulving distinguished 2 types of EXPLICIT memory which are
EPISODIC and SEMANTIC
Episodic memory - ‘My dad went to Barcelona last week’ - has a potential to become … over time
Semantic
Semantic memory - Temporal lobe is involved in processing auditory information and encoding of memory - often requires … exposures
several
Events PRIOR to damage is …
Retrograde
Events FOLLOWING the damage is …
Anterograde
The timeline of … amnesia can vary from minutes to decades
and is often TEMPORARY
Retrograde
The severity of damage done on … is directly proportional to the LENGTH of retrograde amnesia
Hippocampus
… is located deep in the brain, hidden within the medial part of the temporal lobe
Hippocampus
There is a GREATER compromise (harm) of MORE recent memories than the remote ones = … gradient
Temporal
Consolidation of memory over time in Amnesia means you are more likely to forget memories that are … to the damage in timeline
Nearer
Amnesia affects various … modalities:
- visual
- auditory
- somesthetic (touch, temperature sensitivity, and pain)
- olfactory
Sensory
Amnesia affects
- verbal and …
- meaningful and …
- spatial and …
nonverbal - nonsensical - nonspatial
Amnesia usually affects … memory of Explicit memory of Longterm memory
Episodic
Formation of new EPISODIC memories involves the … lobe, particularly the HIPPOCAMPUS
Medial Temporal
Ongoing debate:
Does episodic memory always rely on the … or is the information TEMPORARILY stored in the … before being CONSOLIDATED in the Neocortex (the 4 lobes)
HIPPOCAMPUS
Neocortex consists of … lobes
4
Episodic memory is affected by EMOTIONAL significance, involving the …
AMYGDALA
Neural circuits for Explicit memory:
… lobe consists of 3 cortices: Perirhinal, Parahippocampal and Entorhinal cortex
Medial Temporal
… cortices carry out cognitive processing, specifically reward-based decision-making
Cingulate
Neocortex and Cingulate cortices RECIPROCATE with … cortices (2)
- ParaHippocampal
- PerirHinal
PerirHinal cortex SEND info to … cortex and ParaHippocampal cortex RECEIVES info from … cortex
EntorHinal
EntorHinal cortex RECIPORCATES with the …
Hippocampus
PARahippocampal cortex
- receives connections from … cortex
- has a role in … processing
PArietal and VISUO-SPATIAL
PerirHinal cortex
- receives connections from VISUAL regions of the … stream (known as the WHAT pathway)
- has a role in … object memory
Ventral - Visual
EntorHinal cortex
- has an … function
- is the location of … CELL DEATH in AlzHeimer’s disease
INTEGRATIVE - INITIAL
Loss of ability to learn NEW info is … amnesia
Anterograde
Loss of ability to retrieve prior info is … amnesia
Retrograde
KorsaKoff syndrome is both … amnesias
Antero and Retro
KorsaKoff syndrome is caused by damage to … (hypo/thalamus, mammillary bodies)
Diencephalon
Chronic alcoholism or Malnutrition resulting in vitamin B1 deficiency could result in … syndrome
KorsaKoff
Confabulation in amnesiacs occur when patients fail to … currently irrelevant memories in favor of currently relevant ones
INHIBIT
2 types of Confabulations are
Provoked and Spontaneous
… confabulation occurs when one is pressed to remember details of a memory beyond their memory recall and can happen to non-injured people
Provoked
… confabulation occurs to people with specific types of brain injury where they generate confabulations without any EXTERNAL cues
Spontaneous
Confabulation is associated with the
- Medial …
- … cortex
- Links from the …-…
ORBITOFRONTAL - PREFRONTAL - HIPPOCAMPUS and HYPOTHALAMUS