Untitled Flashcards Set

Why study perception?

To become more aware of your own perceptual experiences, to provide information that may help with a future career, to apply perception to everyday problems.

Which brain structure is responsible for creating perceptions?

Cerebral cortex.

Step in the perceptual process analogous to an ATM withdrawal.

Transduction.

Specific term for 'stimulus on the receptors' in visual processing.

Visual image.

First step in the method of magnitude estimation.

Present the participant a 'standard stimulus' and assign a numerical value.

What happens to visual pigments when they become bleached?

They become detached from the opsin.

Describe visual form agnosia in terms of the perceptual process.

A problem in the recognition step of the perceptual process.

What range of light is visible within the electromagnetic spectrum?

400 to 700 nm.

What is the difference between the method of limits and the method of adjustment?

In the method of adjustment, stimulus intensity is changed in a continuous manner.

The relationship between properties of environmental objects and properties of electrical signals in the nervous system.

Perception depends on both.

The physiological level of analysis in perception includes which relationships?

Both stimulus-and-physiology and physiology-and-perception.

What is the method of constant stimuli known for?

It is the most accurate psychophysical method, but takes the most amount of time.

What does the term 'Weber’s fraction' refer to?

It describes the threshold for sensory perception.

What does visual spectral sensitivity measure?

The response of photoreceptors to light of different wavelengths.

What is the peak sensitivity for rods and cones?

About 498 nm for rods and about 560 nm for cones.

What does the 'rod-cone break' indicate?

Transition from rod vision to cone vision in dark adaptation.