NEUR 0010 - Chapter 24 Flashcards
In what lobe is the hippocampus?
Medial temporal lobe
What is the entorhinal cortex?
Occupies medial bank of rhinal sulcus
What is the perirhinal cortex?
Occupies the lateral bank of rhinal sulcus
What is the parahippocampal cotex?
Lies lateral to rhinal sulcus
Where does info go before reaching the hippocampus?
The rhinal cortex and parahippocampal cortex
What is one of the major output pathways from the hippocampus?
The fornix
Damage to what temporal cortical area causes the most severe memory deficits?
Damage to the perirhinal cortex
What structures are critical for the consolidation of memory?
The medial temporal cortical structures like the hippocampus, rhinal cortex, and parahippocampal cortex
What is one of the more prominent non-temporal areas associated with memory?
Diencephalon
What are the three areas of the diencephalon most implicated in memory?
Anterior thalamic nuclei; dorsomedial thalamic nuclei; mammillary bodies in the hypothalamus
Since one of the major hippocampal outputs is the fornix, where does the fornix send info after that?
To the hypothalamus: mammillary bodies!
After the hippocampus goes to the fornix goes to the mammillary bodies, then what?
Then to the anterior nucleus in the thalamus, then to cingulate cortex
What structures does the dorsomedial thalamic nucleus receive input from? Where does it output?
Receives input from the amygdala and IT cortex; outputs to a lot of the frontal cortex
Korsakoff’s syndrome involves damage to what areas?
Dorsomedial thalamic nucleus and the mammillary bodies of the hypothalamus
Which form of amnesia affects consolidation vs recall?
Antero is consolidation, Retro is recall
Damage to what structures is most likely the cause of anterograde amnesia?
Thalamic structures and the mammillary bodies
The hippocampus is important for what aspect of memory?
Recognition and declarative memory formation, working memory (radial arm experiment), and spatial memory (water maze experiment)
Place cells are affected by what kind of input stimuli?
Visual: you can rotate the location but keep the visual cues consistent with before, and the cell will respond to the visual cues, not the cardinal direction
What is the idea of relational memory, in terms of hippocampal faculties?
Highly processed sensory info comes into the hippocampus and nearby cortex, and memories are formed that link all things happening at the time
What brain structure is most associated with procedural memory?
The striatum (caudate nucleus and the putamen)
What brain area is most associated with working memory?
The neocortex
What is area LIP?
In the intraparietal sulcus: involved in guiding eye movements, useful for temporarily holding info to be used to produce saccades
