Chapter 4 - Sensation and perception

What is the process of transforming environmental signals into neural signals called ?

• Sensation

• Perception

• Transduction

• Adaption

Which of the following best describes perception ?

• The raw data from sensory systems

• The organization, identification, and interpretation of sensory information

• The process of receiving sensory stimuli

• The stimulation of sensory receptor cells

Bottom-up processing refers to :

• Using prior knowledge to understand new information

• Processing that is influenced by experience and expectations

• Building perception from sensory input alone

• Perceiving stimuli based on personal motivation

Top-Down processing is influenced by :

• Raw sensory input

• Sensory organs

• Experience and expectations

• The stimulus and intensity

What is sensory adaptation?

• The process of interepreting sensory information

• The decline in sensitivity to constant stimulation

• The conversion of sensory stimuli to neural impulses

• The process by which the brain fills in missing information

What does psychophysics study ?

• The biology of sensory organs

• The way physical experiences are transduced into perceptions

• The structure of the brain

• Cognitive dissonance in perception

The absolute threshold refers to :

• The smallest detectable difference between two stimuli

• The minimal intensity of a stimulus detectable 50 % of the time

• The inability to detect any stimuli

• The largest intensity of a stimulus

Weber's law is concerned with :

• The aboslute threshold

• The speed of neural transmission

• The minimum change in stimulus intensity that can be detected

• The process of transduction

What is sensitivity ?

• How responsive we are to faint stimuli

• How well we can distingush between two very similar stimuli

• Minimal change in a stimulus that can just barely be detected

• The process during which is prolonged stimulation declines over time

How well we can distingush between two very similar stimuli :