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Flashcards in Nervous System Deck (51):
1

what is esb

electrical stimulation of the brain using electrodes

2

who is Penfield

he mapped the cortex using epilepsy patients

3

what is brain ablation

destroying or removing small bits of cortex

4

what is the corpus callosum

bundle of nerve tissues which connects the left and right cerebral hemispheres.

5

what is controlled by the left hemisphere

language

6

what is controlled by the right hemisphere

visual spatial awrness

7

what was sperry and Gazzingas experiment

right to left and vice versa

8

what is structural neuroimaging

scans that look at structure and anatomy

9

functional neuroimaging

to anaylyse a paticular function of the brain at work

10

describe a cat scan

the patient is injected with contrast iodine which highlights the blood vessels. 2d images in rapid succesion

11

pros and cons to a cat scan

pro would be that it indentifys loction of tumour and is cost effective.
con is that the image is grey scale and emits radiation.

12

describe a mri

uses magnetic fields and radio wavess to vibrate atoms in the barin

13

pros and cons to mri

pro would be that it produces a sensitive clear image and that it is 3d
con would be that it cant be used with pacemakers and its expensive.

14

describe pet

radioactive tracer and glcose are inhected into bloodstream

15

pros and cons to pet scan

pro would be it produces color images and it helps to undestand the progress of a disease over time
a con would be that it is expensive and it is less detailed than a mri.

16

describe fMRI

it measures oxygen consumption and blood flow

17

pros and cons to fMRI

an advantage is tht it does not need radioactive tracers and it produces images in color
a con would be it is expensive and loud.

18

what is the cns

central nervous system consisting of the spinal cord and the brain

19

what is the pns and what are its two divisions

the peripheral nervous system is the network of nerves outside the cns
its two systems are somatic nervous system and autonomic nervous system

20

what is the the somatic nervous system

carries messages from the sensory receptors in the body to the cns

21

what is th autonomic nervous sytem

connects the cns to internal organs and glands

22

what are the two divisions of the ans

sympathetic which is flight or fight
parasympathetic calms the body after action

23

what is a sensory neuron

located in the PNS and recieve sensory information from the CNS

24

what is a motor neuron

located in brainstorm and spinal cord in the cns and extend to muscles and glnds in the pns

25

what are interneurons

link sensory and motor neurons and located in the cns

26

whats the role of the denrite

dendrite recieves information from a nearby neruon

27

role of the soma

cell body which combines information from the dendrites nd sends it to the axon

28

role of the axon

transmits info from the soma to other neurons and cells

29

what is myellin

fatty substance which coast and insulates an axon to prevent interference for near by neurons

30

the functions of glial cells

provide nutrional support
structure
remove dead waste
forms and amintains myelin sheath

31

what is the forebrain

complex cognitive processes such as thinking learning and memory

32

what is the midbrain

processes visual auditory and tactile sensory infor

33

function of the hindbrain

motor function and vital and automatic responses

34

three structures of the forbrain and theri functions

hypothalamus maintains bodys internal enviroment
thalamus filters info from sense receptor sites
cerebrum is everything we consciously think feel and do

35

structure of the midbrain

the reticular information screens incoming info and maintains consciousness

36

three structures of the hindbrain

the pons which is involved in sleep
the medulla which controls vital automatic body functions an the cerebellum which co-ordinates movement

37

what does the frontal lobe do

iniates and controls volunatry movement

38

what does the parietal lobe do

recieves and processes senosry info from organs

39

what does the occipital lobe do

processes visual stimulus

40

what does the temperol lobe do

recieves and processes sound and is facial recognition

41

what is synaptic pruning

synaptic connections are eliminated which is designe to fine tune the neural connectons

42

what is brain plasticity

the ability fro the brain to change in response to experience

43

what is developmental plsticity

development and consilidation of neural pathways in the foetal stage

44

5 stages to developmental plasticity

proliferation is foetus cells deveop
migration newly formed neurons move towards destination
circuit formaion axons of new neurons grow out to target cells
circuit planning is the elimination of excess synapes
and finlly myelination

45

what is sensitive period

organism is moreresponsive to certain stmulation

46

critical period

narrow priod of time where in development an animal is preprogrammed fro learning to occur

47

acquired brain injury

after birth eg stroke

48

sudden onset

eg stroke

49

insidious onset

prolonged use of alco

50

neurodegenerate

progressive decline in structure activity and function

51

spatial neglect

individuals are unabble to notice anything on either left or right side .