Behavioural Neuroscience

Question 1

What is phrenology?

Answer 1

The idea that all psychological functions can be localised to different areas of the cortex

Question 2

what is the aggregate field hypothesis

Answer 2

any part of the brain can carry out any higher function

Question 3

what is theory of distributed processing

Answer 3

shown by broca and wernicke via speech

showing different regions of brain for different function

Question 4

what is neuron doctrine cellular connectionism

Answer 4

neurons organised into functional groups interconnected by neuronal pathways

Question 5

two points on how neurons work

Answer 5

proteins produced in cell body

neurotransmitters packaged in vesicles and passed along neurotransmitters

Question 6

3 types of neurons

Answer 6

multipolar- most common
bipolar- found in sensory systems
unipolar- somatosensory system

Question 7

what are action potentials

Answer 7

maintain size as they propogate down axon

saltatory action using myelin sheaths

Question 8

what are glial cells

Answer 8

neurons make up half volume of CNS but majority of rest is glial cells

Question 9

3 types of glial cells

Answer 9

oligodenrocytes
astrocytes
microglia

Question 10

what are oligodenrocytes

Answer 10

provide support for nuerons and produce myelin (this function is carried out by schwann cells in PNS)

Question 11

4 points about astrocytes

Answer 11

housekeeping duties, support and insolation
provide energy in form of lactate
remove dead tissue through phagocytosis
small quantity of energy stored in the form of glycogen

Question 12

what are microgliw

Answer 12

inflammatory response to infection and removal of dead tissue