Brain Bee Chapter 6 - Jacey

Question 1

Light is a form of electromagnetic energy that enters our eyes where it acts on ____________ in the ________

Answer 1

photoreceptors, retina.

Question 2

true or false? Separate pathways to the midbrain and the cerebral cortex mediate different visual functions

Answer 2

true

Question 3

which part of the brain are neurons in large numbers of distinctive visual areas specialized for making different kinds of visual decisions?

Answer 3

the cortex

Question 4

light enters the eye through the pupil and is focused by the _____ and the ___

Answer 4

cornea and lens

Question 5

where in the eye is the retina situated?

Answer 5

the back of the eye

Question 6

the pupil is surrounded by a pigmented ____

Answer 6

iris

Question 7

how many types of cones are there?

Answer 7

3

Question 8

how many types of rods are there?

Answer 8

1

Question 9

there are ___ million photoreceptors across the surface of the retina

Answer 9

125

Question 10

name every cell in the eye from back to front.

Answer 10

cones, rods, horizontal cells, bipolar cells, ganglion cells,

Question 11

how much more sensitive are rods to cones?

Answer 11

1000 times

Question 12

you see at ____ with your cones and see at ___ with your rods.

Answer 12

day, night

Question 13

three types of cones are sensitive to _____ light wave-lengths.

Answer 13

different

Question 14

define phototransduction:

Answer 14

the conversion of light into electrical signals in rods and cones

Question 15

The visual cortex consists of a number of areas, dealing with the various aspects of the visual world such as:

Answer 15

shape, colour, movement, distance

Question 16

what is V1?

Answer 16

the first stage of cortical processing

Question 17

what is the receptive field?

Answer 17

part of the retina which the cell will respond to the preferred kind of image

Question 18

define plasticity:

Answer 18

IDK ASK SOPHIA

Question 19

true or false? Different

types of neurons are arranged across the six cortical layers.

Answer 19

yep true

Question 20

how do some scientists suggest that the canonical cortical microcircuit works?

Answer 20

like the CPU in a computer

Question 21

name a key function of the cerebral cortex.

Answer 21

ability to form and act upon sensory information

Question 22

______ ____ is one of the cerebral cortex’s capability to form and act upon sensory info.

Answer 22

decision making

Question 23

Another name for the primary visual cortex:

Answer 23

V1

Question 24

Another name for the V5:

Answer 24

MT

Question 25

some colours trigger more ____ ______ than others

Answer 25

action potentials