Final Flashcards
consolidation
Brain forms a permanent representation of memory
prefrontal area
Directs search strategy for retrieval in the hippocampus.
Hippocampus. (role in memory)
stores information temporarily in the hippocampal formation, then over time, a more permanent memory is consolidated elsewhere in the brain.
where does it appear most long term memories are stored
prefrontal cortex
place cells
- Increase firing when an individual is in a specific location
in an environment
– Collectively form a “spatial map”
– Dependent on environmental cues and landmarks
– Also found in humans and primates
schizophrenia
a debilitating disorder characterized by perceptual, emotional, and intellectual deficits that include loss of contact with reality and an inability to function in life.
Hebb rule
If an axon of a presynaptic
neuron is active while the
postsynaptic neuron is firing,
the synapse will be
strengthened
acute vs chronic symptoms of schizophrenia
acute
_ Develop suddenly
– More responsive to treatment
– Prognosis reasonably good
chronic
- Symptoms develop gradually and persist for a long
time
– Poor prognosis
vulnerability model
- Some threshold of causal forces must be exceeded in
order for the illness to occur
– Environmental challenges combine with a person’s
genetic vulnerability to exceed that threshold
hallucinations
Electroconvulsive therapy (ECT)
– Reduces depression by inducing a seizure
– Can be more effective than antidepressant drugs, but
short-lived
– Increases synchrony over large brain areas
monoamine hypothesis of depression
- Depression involves reduced activity at
norepinephrine and serotonin synapses
– Effective antidepressant drugs increase the activity of
NE and/or S
bipolar disorder
Alternate between periods of depression and
mania
– Excess energy, decreased need for sleep and
increased sex drive and (often) drug use
– In some cases, a period of agitation replaces
mania
nicotine’s effect on depression
sleep (function, purpose, mechanisms, stages)
purpose: unclear
function:
mechanism:
stages: