additional midterm 2 cards Flashcards
size of most mammalian neurons
1-20 nanometers
giant axon from loligo vulgaris size
1000 nanometers (1mm)
how fast does signal flow in myelinated vs. unmyelinated axon?
120 m/s in myelinated
only 30 m/s in unmyelinated= much slower
what is ultimately being summed by the AIS?
ion influx or efflux
what does NpHR activate?
cl- pump, inhibitory
who did ther skilled reaching task and what did it give us an animal model of
animal model of stroke
Wishaw and Kolb
how did we study the brain before imaging techniques were developed?
brain injuries and animal lesions
difference between gap junctions and hemichannels
2 hemichannels form a gap junction
where is the raphe nuclei located
midbrain
direct measures
direct measures directly record electrical activity: includes EEG, ERP, and electrophysiology.
DBS VS TMS
you can inhibit or induce behaviour with both, slide wording was incorrect
what kind of neurotransmitter is ACh
only small molecule, no other subclass listed
Why are cytoplasms fused in electrical synapses?
they are fused BECAUSE of the gap junctions, gap junctions link them together
what charge does depolarization get up to
+30mv
difference between axosynaptic and axoaxonic
axosomatic: axon ends on another axon
axosynaptic: axon terminal ends on another terminal
