Figure 3
From: Infrared neural stimulation markedly enhances nerve functionality assessment during nerve monitoring
Stretch injuries are revealed with similar efficacy using both electrical and infrared neural stimulation. (a) Normalized CMAP amplitudes resulting from ES in baseline, healthy, partial stretch, and complete stretch conditions. Black dashed line represents the amplitude damage threshold (50% decrease). (b) Normalized CMAP amplitudes resulting from INS in baseline, healthy, partial stretch, and complete stretch conditions. (c) Sensitivity and specificity for the amplitude-based IONM approach to stretch injuries. (d) Normalized CMAP latencies resulting from ES in baseline, healthy, partial stretch, and complete stretch conditions. Black dashed line represents the latency damage threshold (10% increase). If no CMAP was evoked latency was set to 1.2 for ease of visual interpretation. (e) Normalized CMAP latencies resulting from INS in baseline, healthy, partial stretch, and complete stretch conditions. Note: Six normalized latency outliers in the partial stretch condition exceeded 4 (12–97) and were not plotted for better visualization. (f) Sensitivity and specificity for the latency-based IONM approach to stretch injuries. Specificity in all cases was calculated using the ‘Healthy’ category of responses. All data is normalized to the mean baseline values for each individual nerve. \(n = 10\) nerves for all data sets (5 rats).
