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Chapter 4

PSYCH 2000 Chapter 4: 4 Somatosensory System Perception


Department
Psychology
Course Code
PSYCH 2E03
Professor
Nikol Piskuric
Chapter
4

This preview shows pages 1-2. to view the full 8 pages of the document.
Chapter 4: Somatosensory System Percepon
What Factors Aect the Way You Perceive Touch?
-
-
-
-
-
-
Absolute Thresholds
- Esthesiometer: !"!#$

o%
o&'

-($)Increases
mean threshold
Spaal Factors
- Two-point limen:*
!
o+!Compass Test (CT)
o,!

-()(

Mechanoreceptor Properes and Two Point Discriminaon
- Increase in 2 point discriminaon associated with
o"-
o(
-"./
!"
o0"*#
#
"1
-",2&,2 "!

Only pages 1-2 are available for preview. Some parts have been intentionally blurred.

Hyperaucity
-3,#Point Localizaon Error
(PLE)
o2!##
)
-3##smaller,
o$!!
4
- Hyperaucity: ,

Temporal Factors
-5*!
1. Prolonged, steady smulaon
o6adaptaon
awareness/percepon
o6!7

8
!
onot"!
"

3,9
2. Short, repeve smulaon (vibrotacle smulaon)
o:!

o8)
*;;<;;(-#
!
!!
+!
/
Mechanoreceptor Properes Related to Vibrotacle
Processing
-6/"

-+=&#"#/#
 6&#"#/#$#
-! /
o'$
->4?
Thermoreceptors
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-!$!

-@5AnoBphysiological zero C<D0E!

- Thermoreceptors !physiological zero
o&
o!
o"
- Warm: 40"!
- Cold: 4
δ
Thermoreceptor Sensivity
-:
-$

o#changes
-84#4
4 
Perceptual Aspects of Thermosensaon
-!
o
('!
o-!
Spaal summaon: #!
o
o5

- Adaptaon 
o3-!F
oG#/
-
Opponent Process
- Physiological zero can be shi6ed
o2*;H0 

oIJB
#4*;
H0 !$
Braille for Tacle Communicaon
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