Modular auricular sensing system

A modular auricular sensing system, comprising:

• an earpiece module having a housing, a first coupling element and at least one electrode, the housing including a first end portion configured for at least partial insertion into an ear canal and a second end portion opposite the first end portion, the first coupling element being secured to the second end portion of the housing, and the electrode being arranged along the housing between the first end portion and the second end portion;
• and
• an electronics module having a second coupling element at a first side thereof, the second coupling element being releasably attached to the first coupling element;
• wherein the first coupling element and the second coupling element facilitate electrical connection between the earpiece module and the electronics module to transmit electrical signals from the electrode to the electronics module.