Biological-Signal-Based User-Interface System for Virtual-Reality Applications for Healthcare

Table 1

Biological signal.

	Sensor	Description of measured components
1	Accelerometer	Three-axis acceleration of the device
2	Airflow	Breathing rate
3	Blood pressure	Systolic, diastolic, and pulse
4	Body position	Five body positions (standing/sitting, supine, prone, left, and right)
5	Body temperature	Body temperature
6	Electrocardiogram	Electrical and muscular function of the heart
7	Electromyogram	Electrical activity of skeletal muscles
8	Eye tracking	Eye tracking and direction of interest
9	Glucometer	Approximate concentration of glucose in the blood
10	GSR	Electrical conductance of the skin
11	HR	Number of heart contractions per minute
12	Oximeter	Arterial oxygen saturation of functional hemoglobin
13	Pupil size	Pupil size of the eye
14	Snore	Snoring
15	Spirometer	Peak expiratory flow