Abstract: Various examples are provided related to monitoring of nervous system activity. In one example, a method includes obtaining at least one image of a portion of skin of a subject wherein the subject is not in contact with an imaging system and processing the at least one image to determine at least one characteristic of activated sweat pores in the at least one image. The image(s) can include at least one thermal image. The image(s) can be processed to generate at least one enhanced image for the SPA determination. In another example, a system includes an infrared camera that can capture at least one thermal image of a portion of skin of a subject with the system not in contact with the subject and image processing circuitry that can process the at least one thermal image to determine at least one characteristic of activated sweat pores in the thermal image(s).

Abstract: Various examples are provided related to detection and measurement of respiratory parameters. In one example, a system for monitoring an individual's respiration includes a thermal sensor that can detect CO2, an optical sensor, and image processing circuitry that can determine a parameter of CO2 gas being exhaled about a mouth of the individual using a thermal image captured by the thermal sensor and optical image(s) captured by the optical sensor. In other examples, a system includes an arrangement of thermal sensors and/or optical sensors that can monitor gas being exhaled about a mouth of the individual. In another example, a system includes an arrangement of thermal and optical sensors and image processing circuitry that can determine, e.g., a flow field and/or distribution of gas being exhaled about a mouth of the individual based upon thermal images and optical images captured by the arrangement of thermal and optical sensors.