1. An apparatus comprising: a. a camera; b. an electrical signal generator; c. an electrode, coupled to the signal generator, that stimulates emission of light from a finger associated with a subject when the finger is at a predetermined distance from the camera; d. a light source that illuminates the finger at the distance; e. a removable dielectric barrier, the removable dielectric barrier configured to be selectably placed in a first position between the finger and the electrode, and a second position not located between the finger and the electrode; and f. a computer including a microcontroller circuit configured to: i) activate the light source and the camera to obtain a first live image of the finger illuminated with light from the light source while the finger is disposed at the predetermined distance; and ii) activate the signal generator and the camera to obtain one or more second energized images of the emission of light from the finger obtained in response to AC electrostimulation of the finger while the finger is disposed at the predetermined distance; and g. a processor circuit configured to process information obtained from the first image and to use the processed information to orient the one or more second images; wherein the one or more second energized images comprise a first component obtained with the dielectric barrier in the first position, the first component being associated with physical composite scores, and a second component obtained without the presence of the dielectric barrier and with the dielectric barrier in the second position, the second component being associated with autonomic composite scores, wherein the first component and the second component comprise separate images.