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. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: Clin Neurophysiol. 2010 Sep 6;122(3):594–604. doi: 10.1016/j.clinph.2010.08.005

Table 2.

Frequency change N100 to 250 and 4000 Hz showing detection rate, mean and standard deviation (SD) latency (ms) and amplitude (µV). Not all AN subjects were tested with a 25 and 4% condition. Significance of t-tests and Fisher’s exact test comparing AN and controls are indicated by *.

N100
250 Hz 4000 Hz
condition subjects detection ms µV detection ms µV
50% Controls 15/15 105 (8) −4.4 (1.6) 15/15 101 (8) −3.2 (1.3)
AN 7/10 135 (29)** −2.8 (1.7)* 8/10 115 (13)** −3.8 (1.6)
25% Controls 15/15 115 (12) −3.9 (1.5) 14/15 108(11) −3.5 (1.7)
AN 1/5** 120 −5.4 4/5 132 (29)* −3.3 (0.9)
10% Controls 14/15 134 (20) −3.2 (1.0) 14/15 109 (11) −3.0 (1.2)
AN 3/10** 154 (11) −1.0 (1.7)* 5/10* 128 (19)* −1.7 (0.9)
4% Controls 9/15 165(18) −2.6 (0.7) 11/15 112(9) −2.8 (1.7)
AN 1/5 165 −2.2 2/5 133 (16) −1.5 (0.2)
*

p<0.05;

**

p<0.01;

***

p<0.001