Musiek - APD

Denmark II

D I I D Training
Dichotic Interaural Intensity Difference
Training

LE Deficits for Dichotic Listening in Children
(% of cases)
Digits C. Sentence LPFS
R > L = 76.2 % 89 % 45.8 %
L > R = 14.3 % 0 % 37.5 %
R = L = 10.5 % 11 % 16.7 %
** R > L = 23.8 % 51.9 % 4 %
** = > 20%
[Musiek]

LE dichotic deficits
• Right hemisphere dysfunction
• Callosal dysfunction

HISTORY: Dichotic Interaural Intensity Studies
Musiek, 1979
Pinheiro, Musiek, 1982
Katz et al., 1984
Bergman et al., 1989
Musiek et al., 1998

Dichotic Interaural Intensity Difference Training
=
DIID

D I I D
L E = 32% RE = 92%
50 dB HL = 32% 50 dB HL = 92%
50 dB HL = 40% 43 dB HL = 86%
50 dB HL = 64% 36 dB HL = 60 %
50 dB HL = 80% 29 dB HL = 46%
[Musiek]
crossover

D I I D
L E = 32% TRAINING RE = 92%
50 dB HL = 88% 50 dB HL = 92%
50 dB HL = 86% 43 dB HL = 84%
50 dB HL = 88% 36 dB HL = 60 %
50 dB HL = 88% 29 dB HL = 46%
[Musiek]
1–5 dB

D I I D
TRAINING
CONDITIONS
1. UNDER EARPHONES
2. SOUND FIELD

D I I D MATERIALS
WORDS, SENTENCES, CVs, VCs, CVCs,
VCVs, NUMBERS
[IN LIKE AND UNLIKE COMBINATIONS]

D I I D TASKS
1. Binaural separation/integration
-directed/free recall
2.Analysis of ear directed targets)
-place, time, kind, word, etc.
3.Ear directed judgments
-intensity, clarity etc.
4.Cross modality
-auditory-tactile

%
100
50
0
D.Digits F. Patt. LPFS C. Sent. D. Rym.
LE RE
O
X
LE RE LE RE LE RE LE RE LE RE
O
O
s
X
DIID TRAINING
Normal Range for Adults
O
O=right
X=left
X
X
O
=right retest
=left retest
SSW
X
13 Y.O
auditory &
academic
difficulties
CaseZAM

20
10
0
Prelim. Data
Mean % Dichotic Improvement from DIID Training
#1
#2
#1
#1
#1 = Musiek
Digits Digits C. Sent. Digits - Control
N=29 N=8 N=21 N=7
#2= Wertz, Moncrieff,
Musiek
{ 30 min/3
times/wk/4wks}
= LE
= RE

5
5.0
4
4.0
3
3.0
2
2.0
1
1.0
0
0.0
Mean Com – Ed Questionaire Scores – C. Lau
Li steni ng Di r ections Comm Acad Imp Repeat Under stand Attention Noi se Al er tness Hear i ng
0 = no improvement, 5= no problem

(Musiek)
RH
CC
LH
RE LE
(dog) (cat)
Dichotic Listening Function,
Pre Training

(Musiek)
RH
CC
LH
RE LE
(dog) (cat)
Dichotic Listening Function,
Post Training