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29 Cards in this Set

  • Front
  • Back
process by which our
sensory receptors and nervous system receive and represent stimulus
process of organizing and interpreting sensory information, recognize objects and events
Bottom-up processing
analysis that begins with the sense receptors and works up to the brain’s intergration of sensory information
Top-down processing
information processing guided by higher-level mental processes
Difference threshold
just noticeable difference, is the minimum difference a person can detect between any two stimuli
Weber's Law
to perceive difference between two stimuli, there must be a constant minimum percentage difference
Sensory Adaptation
diminishing sensitivity to an unchanging stimulus
understanding how light works and how our eyes operate
electromagnetic energy that travels in wavelengths , we cannot see all forms of light
Rainbows occur when ...
light filters through water vapor
The Colors of a Rainbow
Red, Orange, Yellow, Green, Blue, Indigo, Violet (ROY G. BIV)
Pupils size reflects ...
only sensitive to the brightness of light (black and white)
provide us with color vision
Visual acuity
sharpness of vision, determined by our ability to see visual details in normal lighting
sees objects clearer when they are closer
see objects clearer when they are further
What determines color?
the wavelength of light
How does sound travel?
in waves caused by changes in air pressure caused by vibrations
A vibration is called ...
a cycle or a sound wave
Each sound has its own ___ and ___
pitch and loudness
the number of cycles per second (the more cycles, the higher the pitch)
Human ears can hear sound waves that vary from ___ to ___
20 to 20,000 cycles per second
Dogs and dolphins hear sounds that are above ___
20,000 cycles per second
Loudness is determined by ___
the height of the sound wave
What is the height of the sound wave known as?
the amplitude
Loudness is measured in ...
decibels (dB)
___ is considered to be the threshold of hearing
Zero dB
Zero dB is as loud as ...
a ticking watch from 20 feet away in a quiet room