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Table 3 - Efficiency and latency of responses to stimulation of branches of the superior laryngeal nerves

From the following article

Anatomy and development and physiology of the larynx

Clarence T. Sasaki

GI Motility online (2006)

doi:10.1038/gimo7

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Side stimulatedResponse measured0.5 MAC1.0 MAC

MAC, minimal alveolar concentration; SD, standard deviation.

*‡p <.0001 (Student's t-test).

†Given difference in length between right and left recurrent laryngeal nerves, one would anticipate that latencies of right ipsilateral R1 would be less than those of left ipsilateral R1 within subjects. This difference was apparently lost when latencies were averaged across subjects.

§ Data acquisition at each depth of anesthesia was always dictated by intraoperative requirements limiting number of trials in this category. Analysis of contralateral responses at 0.5 MAC for both sides (12 for stimulation of left nerve and six for stimulation of right nerve) revealed that measures were consistent regardless of side stimulated.

LeftIpsilateral R1
Efficiency
Latency (ms; average plusminus 1 SD)
Contralateral R1
Efficiency
Latency (ms; average plusminus 1 SD)
12/12 (100%)
16.3 plusminus 1.5

12/12 (100%)*
20.5 plusminus 3.8
12/12 (100%)
17.2 plusminus 0.7

0/12 (0%)*
RightIpsilateral R1
Efficiency
Latency (ms; average plusminus 1 SD)
Contralateral R1
Efficiency
Latency (ms; average plusminus 1 SD
15/15 (100%)
16.7 plusminus 2.0†

6/6 (100%)‡§
20.8 plusminus 4.4
15/15 (100%)
16.5 plusminus 1.9

0/15 (0%)‡
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