Textbook Notes (270,000)
CA (160,000)
McMaster (10,000)
PSYCH (1,000)
Chapter 7

PSYCH 2000 Chapter 7: 7 Auditory System 2


Department
Psychology
Course Code
PSYCH 2E03
Professor
Nikol Piskuric
Chapter
7

This preview shows pages 1-2. to view the full 8 pages of the document.
Percepon
- Hearing:
-
-
o
o
Intensity vs. Loudness
- Loudness magnitude of the percepon

o
 !" !#!!!$%&
'( !$%

)
'
*Masking
Measuring Audibility Thresholds – Intensity and Loudness
-+#,
o-#
.
o) clinical 
-*
oMinimum audible eld (MAF) threshold
/01#100
(2&
#
Advantage:#3
#
Disadvantage: 1
"4#2

oMinimum audible pressure (MAP) threshold
5
.&
Advantage:
-.
Absolute Detecon Thresholds

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

-62
"
-78
-9:8+,'
-9 8+:!!$%,;
- Minimal audibility curve:

o)#
 !!!<=!!!$%
o#

o; !#!!!$%#(>
Anatomical and Physiological Determinants of the MAC
-+)<?,
1. Conducve elements of the outer and middle ear
o@A&3

o*#B0

2. Mechanical response of the cochlea
o76
o'.
o#.
#1.
3. Physiological properes of the auditory nervous system
o@AC
&
o#<
Factors that A+ect Absolute Sensivity
1. Method of data collecon
o?D?*
7
0
oE
B&
2. Monaural or binaural sound (to one ear or two ears)
o?F;#22double 

oBinaural summaon: 
o?

3. Duraon of sound
You're Reading a Preview

Unlock to view full version

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

o3 !!
oTemporal summaon: <

Terminal Thresholds
- Suprathreshold detecon levels:

-Terminal threshold:?3
#>

oCuts off, as frequency increases
oHard to experimentally determine
what the threshold is for sounds of
high frequency
oSounds of high frequency at high
intensitites object vibrates very
quickly but also with very large amplitudes higher frequency = harder to move
larger distances
oDifficult to create sounds that fall into this category
-Dynamic range: intensitives of normal hearing more to do with minimal audibility curve
that terminal threshold
Di+erence Thresholds
- Recall:+(#
 constant#
#
oDi+erence threshold, Delta I = K*I
- Q1.+(,
7#5#-
- Q2:5.
,725#
#-
2
You're Reading a Preview

Unlock to view full version