Figure 4
From: Infrared neural stimulation markedly enhances nerve functionality assessment during nerve monitoring
Electrical stimulation and infrared neural stimulation produce consistent latencies and amplitudes in undamaged nerves over extended periods of time. (a) Probability density function of normalized latencies produced in undamaged nerves resulting from ES (teal) and INS (red). Grayed region represents latency responses that exceed the damage threshold (10% increase in latency). (b) Probability density function of normalized amplitudes evoked in undamaged nerves resulting from ES and INS. Grayed region represents amplitude values that fall below the damage threshold (50% decrease in amplitude). (c) Statistical analysis of latency variance and false positive rate (d) Statistical analysis of amplitude variance and false positive rate. (e) Time course of normalized latency values over two hours produced by ES and INS. All values normalized to the mean at \(t{ } = { }0\;{\text{min}}\). Linear fitting performed on all data for ES (\(R^{2} = 0.16\)) and INS (\(R^{2} = 0.01\)). (f) Time course of normalized amplitude values over two hours produced by ES and INS. All values normalized to the mean at \(t{ } = { }0\;{\text{min}}\). Linear fitting performed on all data for ES (\(R^{2} = 0.33\)) and INS (\(R^{2} = 0.004\)). \(n = 30\) nerves for all distribution graphs [a–d; 15 rats total]; \(n = 3\) nerves and rats for time course plots (e–f).
