Finger-mounted physiology sensor

A physiology sensor adapted to be worn on a single finger of a wearer to capture a number of different physiological signals, the physiology sensor comprising:

• a one-finger sensor body having a finger-facing surface and defining a longitudinal axis, the sensor body including first and second raised mounds protruding from the finger-facing surface and being longitudinally spaced-apart such as to define a transverse air gap therebetween, the first and second raised mounds respectively retaining first and second electrodes each defining a skin-abutting electrode surface being raised relative to the finger-facing surface and adapted to abut longitudinally spaced-apart palmar surfaces of the single finger;
• two or more physiological sensing devices housed within the sensor body, the physiological sensing devices comprising:
• a skin conductance sensing device;
• and at least one of a temperature sensing device and a photoplethysmography sensing device;
• the skin conductance sensing device being operable to measure skin conductance using the first and second electrodes, the temperature sensing device being disposed beneath the second electrode and thermally coupled therewith for sensing temperature of the skin abutted against the skin-abutting electrode surface of the second electrode, and the photoplethysmography sensing device including at least one optical sensor disposed beneath the first electrode and optically communicating with the skin abutting against the electrode surface thereof, the electrode surface of the first electrode being adapted to transmit light therethrough;
• and
• a processor housed within the body and in communication with the electrodes and the at least two physiological sensing devices, the processor modulating application of an electrical excitation to the skin conductance sensing device and processing physiological signals captured by the at least two physiological sensing devices.

A method for capturing a plurality of different physiological signals from palmar surfaces of a single finger with a physiology sensor, the method comprising:

• providing the physiology sensor with first and second electrodes mounted to a sensor body, the first and second electrodes having skin-abutting electrode surfaces which are elevated relative to a surface of the body;
• contacting spaced-apart palmar surfaces of the single finger with the skin-abutting electrode surfaces of the respective first and second electrodes of the sensor;
• and
• using the sensor to capture skin conductance and at least one of temperature and blood volume pulse, the step of capturing skin conductance of the skin of the palmar surfaces of the single finger including applying an electrical excitation to the electrodes.