Ch 3 - Sensation and Perception

Which of the following statements accurately describes the relationship between sensation and perception?

• Sensation is the process of organizing and interpreting sensory information, while perception is the process of receiving stimulus energies.

• Sensation and perception are two separate processes that occur independently of each other.

• Sensation is the process of receiving stimulus energies from the external environment and transforming those energies into neural energy, while perception is the process of organizing and interpreting sensory information so that it makes sense.

• Sensation and perception are interchangeable terms for the same process.

A person has just moved to a new city and is exploring a neighborhood for the first time. As they walk down the street, they notice several people of different races and ethnicities walking by. The person has a stereotype that people of a certain race are more likely to be criminals. Which type of processing may influence their perception of the people they see?

• Top-down processing

• Bottom-up processing

• Perceptual processing

• None of the above

John experiences a unique sensation where he can taste words. Which of the following senses is responsible for this phenomenon?

• Photoreception

• Mechanoreception

• Chemoreception

• Extrasensory perception

Which of the following is an example of synaesthesia?

• Feeling a sharp pain in your leg after stubbing your toe

• Seeing a bright light after looking directly at the sun

• Tasting a color or "seeing" music

• Smelling a delicious meal cooking in the kitchen

Imagine a person who experiences a rare phenomenon called synesthesia, where one sense can trigger an experience in another sense. For example, they might see colors when they hear music or taste flavors when they touch objects. Which brain region is most likely involved in this condition according to the fMRI study mentioned in the text?

• The occipital cortex

• The temporal cortex

• The parietal cortex

• The thalamus

Which of the following statements about the absolute threshold is false?

• The absolute threshold is the minimum amount of stimulus energy that a person can detect.

• If the energy of a stimulus falls below the absolute threshold, we can detect its presence.

• Psychologists have arbitrarily decided that the absolute threshold is the point at which an individual detects the stimulus 50 percent of the time.

• The absolute threshold is the same for all individuals and does not vary based on their senses or other factors.

A company is conducting a study on the difference threshold to determine how much change is needed in the product's color to make it noticeable to customers. They are considering changing the color of their product from blue to a slightly different shade of blue. What should they consider when making this decision? Which of the following is true regarding the difference threshold?

• The difference threshold is the largest difference in stimulation required to discriminate one stimulus from another 50 percent of the time.

• Difference thresholds decrease as a stimulus becomes stronger.

• Weber's law states that two stimuli must differ by a constant amount to be perceived as different.

• Weber's law states that two stimuli must differ by a constant amount to be perceived as different.

What determines the perceived saturation or richness of a visual stimulus?

• The wavelength of light reflected from the stimulus.

• The amplitude of the waves of light.

• The purity of the wavelengths.

• The brightness of the stimulus.

Sarah is designing a new logo for her business and wants to make sure the colors are just right. According to the information in the text, which of the following determines the hue or color of a visual stimulus?

• The amplitude of the light wave

• The frequency of the light wave

• The purity of the light wave

• The combination of all wavelengths of light

Which part of the retina is vital for many visual tasks and contains only cones?

• Blind spot

• Ganglion cells

• Fovea

• Rods