Chapter 5 Flashcards
What is sensation?
Detection of stimuli (physical), goes to the brain
What is perception?
Interpretation of sensory input
What is bottom-up processing?
Start with the individual elements that make up an object, put them together, and interpret as a whole
What is top-down processing?
Interpreting sensory information with existing knowledge, expectations, experience
What is transduction?
Process whereby the sensory info is converted to neural signals for the brain to interpret
What is a stimulus?
Any detectable input from the environment
What is an absolute threshold?
The minimum amount of stimulation that can be detected (50% of the time)
What is sensory adaption?
A decline in sensitivity due to constant stimulation
The sense of hearing is associated with what system?
The auditory system
What are sound waves?
Vibrations of molecules that travel through a medium, such as air
How is sound measured?
In decibels (dB)
Sounds can be described in _____
amplitude
How can sounds be described? And how is it measured?
In terms of their frequency; cycles per second or hertz (Hz)
Pitch depends on what?
Frequency
The sense of taste is associated with what system?
Gustatory System
What are gustatory receptors?
Clusters of taste cells found in the taste buds
What are the 5 different types of how we perceive taste?
Sweet; salty; sour; bitter; umami
What animal relies heavily on their taste buds?
Catfish