Figure 6.

Original monitoring protocol of blood pressure (BP), raw electrocardiographic signal (ECG), and heart rate (HR) before and immediately after onset of violet laser stimulation. Note the decrease in BP and HR (red arrow).

Original monitoring protocol of blood pressure (BP), raw electrocardiographic signal (ECG), and heart rate (HR) before and immediately after onset of violet laser stimulation. Note the decrease in BP and HR (red arrow).