Neural Representations

Question 1

____ potentials occur when there is sufficient input to the postsynaptic neuron:

Answer 1

Action

Question 2

It is possible for action potentials to be artifically elicited. True or false?

Answer 2

True

Question 3

A rapid change in the voltage of the cell membrane, thus allowing synaptic transmission to occur, is known as a(n):

Answer 3

Action potential

Question 4

Single cell recordings are a useful and non-invasive way of examining neural activity in humans (as well as other primates.) True or false?

Answer 4

False

Question 5

Name the region of space to which the activity of a neuron is limited and excited by external stimuli:

Answer 5

The receptive field

Question 6

Which non-invasive technique might be used to detect the entire population of neurons which are responding to a stimulus?

Answer 6

fMRI

Question 7

According to research, approximately how many V1 neurons are involved in the representation of a single visual image?

Answer 7

200 million

Question 8

Which sensory system can be found between the superior temporal gyrus and the central sulcus?

Answer 8

The primary auditory cortex/ A1

Question 9

Which two lobes of the brain are separated by the central sulcus, in which the A1 is found?

Answer 9

Frontal; parietal

Question 10

Which type of mapping is used for the organisation of cells in the A1?

Answer 10

Tonotopic

Question 11

Cells in the primary visual and motor cortexes are organised via what type of mapping?

Answer 11

Topographic

Question 12

The spatial organisation of sound frequencies in the brain is called:

Answer 12

Tonotopy