Lecture 2 part 1 Flashcards
1
Q
Neurocognition
A
- Brain and cognition together
- Cognition a result of different brain states
2
Q
Dissociation
A
Disruption in one component of mental functioning but no impairment of another
3
Q
Neurons
A
- Basic building block of the brain and nervous system
- Cell specialized for receiving and transmitting a neural impulse
4
Q
Dendrites
A
Gather neural impulses into the neuron (input)
5
Q
Soma
A
Cell body
6
Q
Axon
A
Long extension from soma
7
Q
Axon terminals
A
- Output to other neurons
- Tree like
8
Q
Myelin sheath
A
- Insulator for the axon
- Mainly on neurons that are long
- Not all neurons have this
9
Q
Action potential of neural communication
A
- Change in electric charge of a neruon from negative to positive
- Charge propagates from the dendrites and down the axon
10
Q
All or none principle of neural communication
A
- All action potentials are the same
- Either a neuron fires or it does not
11
Q
Synapses
A
- Region in which axon terminals of one neuron and dendrites of another come together
- May be a few or many synapses
12
Q
Neurotransmitter
A
- Chemical substance released into the synapse between 2 neurons
- Responsible for activating or inhibiting the next post-synaptic neuron
13
Q
Long-term potentiation (LTP)
A
- Changes in the ease at which 2 connected neurons will fire
- Lasts a few hours, days, or weeks
14
Q
Consolidation
A
- Long-term change over days, week, months, or years
- Small scale between individual neurons
- Large scale change in assemblies of neurons over long period of time
15
Q
Thalamus
A
- Gateway to the cortex
- Almost all messages pass through here
