System for determination and change of physiological response and emotional state

A system comprising:

• a housing comprising a gripping area and an exterior wall portion separating an interior of the housing from an exterior of the housing, wherein the exterior wall portion comprises a material that is opaque or reflective when viewed from the exterior of the housing but is translucent or transparent when viewed from the interior of the housing;
• a receptacle at least partially defined by the housing, the receptacle comprising a bottom configured to separate the receptacle from the interior of the housing;
• a sensor array, comprising a camera and an accelerometer, wherein the camera is located in the interior of the housing facing toward the exterior wall portion;
• and
• a communication nexus in communication with the sensor array comprising a processor coupled to memory;
• wherein the processor is configured to detect a tremor in a person using information from the camera and the accelerometer when the person holds the housing by the gripping area.