Abstract: Devices and methods for electrical potential sensing and influencing are provided. The inventive devices include electroencephalography (EEG), electrocardiogram (EKG), photoplethysmography (PPG), electromyography (EMG), and temperature devices for measuring bio-activity signals from a body. The described devices are designed to include motion dampending, a hybrid non-contact and contact sensing surface and to optimise sensitivity in difficult sensing conditions, such as during movement, through obstructions like hair and clothing, while having a convenient and small form factor. The inventive devices provide for improved sensitivity, adaptability, and noise reduction when compared to other designs. Methods for influencing said bio signals with a device with a hybrid non-contact and contact sensing surface are also described.

Abstract: Devices and methods for monitoring, stimulating, and entraining electrical activity generated by the brain of a person are provided. Electroencephalography (EEG) and photobiomodulation (PBM) devices in the form of headphones for monitoring, stimulating, and entraining electrical activity generated by a person's brain are described, along with methods for monitoring and stimulating a person's cognitive and physiological state using the provided devices. PBM light is pulsed to stimulate an increase in targeted brainwave frequencies through entrainment and providing additional energy to mitochondria. PBM stimulation is combined with EEG sensors and neurofeedback. The neurofeedback may be used to assist users with stress, anxiety, fatigue, mood, creativity and mental focus and acuity.