Ch. 6 Sensation Flashcards
The process by which stimuli are detected and encoded
Sensation
The mental process of organizing and interpreting sensations (cognitive perspective)
Perception
Minimum stimulation required to detect a stimulus 50% of the time
Absolute threshold
As the magnitude increases the difference must also increase
Ex. Quarter in envelopes vs. quarter in boots
Weber’s law
Decreasing sensitivity to unchanging stimulation
Ex. Vision- snowblindness
Hearing- white noise
Sensory adaptation
What prevents sensory adaptation from happening?
Constant eye movements
The transformation of physical stimuli into neural activity
Sensory transduction
_____ of the ganglion cell converge to form the optic nerve
Axons
What does the iris of the eye do?
It surrounds the pupil and controls the size of it