Topic 8.1 Flashcards
How is information encoded in the nervous system? (3)
- labelled lines
- spatial maps
- Pattern of nerve impulses
neural network function (3 steps)
1) input
2) computation
3) output
Most frequent nt for EPSP
glutamate
What are the 2 glutamate receptor types?
- ionotropic
- metabotropic
Most frequent nt for IPSP
GABA
GABA receptor types
GABA a : ligand gated Cl- channel
Gaba b : Gi coupled
How is anion selectivity determined for GABA a?
Charged AA side chains inside the channel
Analog receptors to GABAa (3)
- Glycine R (anion channel)
2. nACHR, 5HT3R (cation channels)
How is amplitude of combined PSP encoded?
In the AP frequency
How is rythmic bursting activity explained?
Presence of VDCC + Calcium dependant K+ channel
Types of channels in non adapting neuron?
- quick voltage gated Na+ channel
- K+ channel
Type of channel in adapting neuron
slowly activating, voltage gated K+ channel
Example of retrograde signaling
With 2-arachydonylglycerol and CB1R
Which glutamate receptors are GQ coupled?
metabotropic type 1 and 5
WHich enzyme converts DAG - 2AG
DAG lipase