Chapter 4

Sensation

detecting converting and transmitting raw sensory data to the brain
perception

selecting, organizing,a nd interpreting sensory information
bottom up processing

data driven processing moving from parts to the whole
top-down processing

conceptually driven processing moving from the whole to the parts
transduction

converting receptor energy into neural impulses that are sent to the brain
coding

converting sensory input into specific sensations
sensory reduction

filtering and analyzing of sensations before messages are sent to the cortex
absolute thresholds
- - smallest amount of stimulus that can
  - be detected (hearing/ eye exams)
difference thresholds
- minimal difference needed to detect stimulus
- change (lip stick)
Sensory adaptation

tolerance
gate control theory

gate in spinal cord blocks or allows pain signals to pass in to brain

Author

dreachua

19983

Card Set

Chapter 4

Description

sensation

Updated

2010-05-20T05:54:58Z

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