Question 1

Transduction from light to a neural signal happens in the:

Accepted Answer

Transduction from light to a neural signal happens in the photoreceptor cells in the retina. The photoreceptor cells consist of two types of cells: rods and cones. These cells absorb light and convert it into an electrical signal that is transmitted to the brain via the optic nerve. The cornea and iris are involved in focusing light onto the retina, while the optic nerve transmits the neural signal generated by the photoreceptor cells to the brain.

Question 2

Visual receptors are found in the:

Accepted Answer

Visual receptors are found in the retina, specifically in the layer of cells called the photoreceptor layer. The cornea is the clear outer layer of the eye, the iris controls the amount of light that enters the eye, and the optic nerve carries visual information from the eye to the brain.

Question 3

Research has found that,since the introduction of the 'ear bud" earphone,the hearing ability of the average 21-year old of today is equivalent to the average 80-year old of ten years ago.This suggests that the "ear bud" might be causing

Accepted Answer

The fact that the hearing ability of a 21-year old is equivalent to that of an 80-year-old suggests that the damage caused by earbuds is likely to be related to nerve deafness. Nerve deafness is caused by damage to the hair cells of the inner ear or the auditory nerve, which typically occurs due to exposure to loud noise over time. Earbuds can generate sound levels that are high enough to cause permanent damage to the hair cells, leading to nerve deafness.

Question 4

The stimulus for vision is

Accepted Answer

Vision is stimulated by electromagnetic radiation, which includes visible light along with other forms of radiation such as ultraviolet and infrared. This radiation is detected by the photoreceptor cells in the retina, which convert the electromagnetic radiation into neural signals that are processed by the brain to create perception of light and color.

Question 5

Dr.Tannenhaus is seeking funding to support a program to develop music skills among middle-school students in the fifth through seventh grades.You are on the committee evaluating his grant application.Which of the following pieces of feedback should you give him?

Accepted Answer

The answer of Dr.Tannenhaus is seeking funding to support a...

Question 6

Antarctica scientists have just discovered the frozen body of a new animal species.Upon examination,they discover that the retina of one of the species is only comprised of rods.What could scientists hypothesize about this animal's lifestyle?

Accepted Answer

Rods are photoreceptor cells in the retina that are highly sensitive to light but do not distinguish colors; they are more associated with night vision. Therefore, an animal with a retina comprised only of rods likely did not see color and was nocturnal.

Question 7

Which of the following is NOT a characteristic of vision associated with rods?

Accepted Answer

Rod cells are responsible for night vision, peripheral vision, and have poor visual acuity. However, they do not provide colour vision. Colour vision is the function of cone cells.

Question 8

Which of the following is the best source of evidence that organization in the primary auditory cortex is tonotopic,and that this organization occurs during a sensitive period in development?

Accepted Answer

Animals exposed to pure tones during a specific period in development show more representation of those sounds in the auditory cortex, which indicates the tonotopic organization of the primary auditory cortex. This sensitive period during development suggests that the organization occurs through experience-dependent plasticity. The other options do not provide evidence for tonotopic organization in the primary auditory cortex or its development during a sensitive period.

Question 9

Earleen has accumulated so much wax in her left ear that sounds are muffled.Earleen is experiencing

Accepted Answer

Conduction deafness occurs when there is a problem conducting sound waves anywhere along the route through the outer ear, tympanic membrane (eardrum), or middle ear (ossicles). Accumulation of wax can block sound waves from reaching the inner ear effectively, leading to this type of hearing impairment.

Question 10

According to your text,tinnitus affects about 1 in ___ people.

Accepted Answer

The answer of According to your text,tinnitus affects about 1...

Question 11

Theresa just walked outside into bright sunlight and her pupils constricted.What part of the eye is responsible for making this happen?

Accepted Answer

The iris is responsible for controlling the size of the pupil in response to varying amounts of light. When there is bright sunlight, the iris will cause the pupil to constrict to reduce the amount of light entering the eye.

Question 12

Dr.Horner is conducting research on the development of the tonotopic map in the auditory cortex of rats.He repeatedly exposes both young and old rats to pure tones.Which of the following statements most accurately reflects what Dr.Horner will find?

Accepted Answer

The tonotopic map in the auditory cortex of rats is developed during the sensitive period, which occurs during early life. Exposure to pure tones during this time helps in the formation of the map. Hence, there will be a larger representation of those sounds in the auditory cortex of the young rats. Older rats, who are beyond the sensitive period, will not be able to reorganize their auditory cortex to form new representations of sounds, so the representation of those sounds in their auditory cortex will be relatively lower. Option C is the best answer.

Question 13

Of the following,which apply to rods only? 1 - used for daytime vision
2 - found in the periphery of the eye
3 - used for visual acuity
4 - used for colour vision
5 - used for detecting movement
6 - found in nocturnal animals
7 - more numerous in the retina

Accepted Answer

Rods are only used for daytime vision, and they are found in the periphery of the eye. They are also used for detecting movement and are more numerous in the retina. Rods are found in nocturnal animals, which explains why they are more sensitive to low light conditions. However, they are not used for visual acuity or colour vision, which are functions of cones.

Question 14

As compared to cones,rods

Accepted Answer

Rods are more sensitive to light than cones, which allows them to function better in low light conditions. Cones are concentrated in the fovea and are responsible for color vision, while rods are more numerous in the human retina.

Question 15

An owl conducts most of its hunting at night.Which of the following would you expect to find in greater abundance if you examined its visual system?

Accepted Answer

Rods are specialized cells in the retina that are responsible for vision in low-light conditions. Since owls hunt primarily at night, their visual system would prioritize the use of rods to detect prey in the darkness.

Question 16

Which of the following statements most accurately describes the relationship between the electromagnetic spectrum and visible light?

Accepted Answer

Visible light is just a small part of the larger electromagnetic spectrum, which ranges from radio waves with very long wavelengths to gamma rays with very short wavelengths. Only a small portion of the electromagnetic spectrum is visible light, which falls between approximately 400-700 nanometers in wavelength.

Question 17

Regarding cochlear implants,which of the following statements is true?

Accepted Answer

While cochlear implants can provide some level of hearing for many deaf individuals, it is a personal choice and not all choose to pursue this option. Therefore, statement A is true while statements B, C, and D are false.

Question 18

Melvin has played electric guitar for years at volumes much too loud.Unfortunately,he has permanently damaged his hair cells,and they no longer function.This means that he:

Accepted Answer

Hair cells in the inner ear are responsible for converting sound vibrations into electrical signals that the brain can interpret as sound. If these cells are permanently damaged and no longer function, the individual would not be able to hear anything.

Question 19

What is defined as the visible spectrum of light?

Accepted Answer

The visible spectrum of light is defined as the range of electromagnetic radiation that humans can perceive with their eyes, and it covers wavelengths from approximately 400 to 700 nanometers (nm). Choice A and B are in the ultraviolet range, while choice D is in the infrared range and thus not part of the visible spectrum.

Question 20

The term for the perpetual sense of a ringing in the ears is called:

Accepted Answer

Tinnitus is the term used to describe a constant or recurring ringing in the ears. Conduction deafness refers to a blockage or damage in the outer or middle ear that prevents sound waves from reaching the inner ear. Amusia is a disorder that affects the ability to recognize and process musical tones. Strabismus is a condition where the eyes are misaligned and do not work together.

Quiz 5: Sensation and Perception