About this Research Topic
As the ear is an unconventional place for monitoring these physiological measures, a common challenge for ear-centered sensing is to gain a better understanding of the signals that are recorded at this location. The questions that need to be answered are: How does the signal (e.g. ECG, or EEG) acquired at the ear relate to the signal as acquired at the classical recording sites? Which signals are ear-centered systems sensitive to, which signals are lost? How can we reliably discriminate in real time signals from artifacts? And finally, how do we interpret data that is acquired over extended periods of time when we have little or no control over the recording environment?
For the sensing of physiological signals over extended periods of time dedicated sensor and amplifier technology is needed that is convenient to use, robust and reliable. People wearing these sensors should not be restricted in their activities. Hence, for long-term usage sensor and amplifier technology need to be unobtrusive in every aspect: the materials need to be biocompatible, adjust to the individual's anatomy and be comfortable to wear. They need to be sufficiently robust to allow for continued usage and self-fitting, and they need to be small and inconspicuous.
The electronic instrumentation, including bio-signal conditioners and amplifiers, analog-to-digital converters, means for signal processing and wireless transmission need to be sufficiently small and light-weight to be placed at the ear together with the sensors. The power supply has to be secured either by low-power electronics or by smart ways to recharge the battery, or even by harvesting body energy. For the tiny signal changes, as produced for example by brain activity amplifiers need to be sensitive enough to detect them while maintaining robust artifact rejection capabilities.
For this Research Topic, we solicit researchers working on these aspects of ear-centered sensing. We believe that this Topic will help to develop the field further by revealing common efforts from different disciplines and by bringing together the different fields of expertise.
Keywords: Electroencephalography, eye-tracking, physical measurements, electrophysiological measurements, mhealt
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.