Abstract: A pillow cover device for promoting for a user restorative sleep and minimizing sleep inertia and fatigue upon waking comprising at least one non-invasive brain stimulator for stimulation of the brain at various selected frequencies; an alarm; sensors to monitor sleep; and a microprocessor, wherein the sensors provide the microprocessor data regarding the state of sleep of the user; wherein the microprocessor calculates brain activity indicating deep sleep slow-wave activity and activates the at least one brain stimulator to emit low frequency tones.

Abstract: Analog electrical and pressure data obtained by an EEG/pressure sensor matrix from the subject are sent to a signal processing module that derives digital EEG data from the electrical signal and pressure data without using sensors attached to a subject's head. The pressure data are used as a secondary signal to measure the physical orientation of the subject's head. The physical orientation is used to transform the derived EEG signal to a known coordinate axis (the orientation of the subject's head) to obtain useful, consistent, and accurate EEG data. The EEG may be used to determine a sleep state of a subject and to awaken the subject while in a particular state.

Abstract: Analog electrical and pressure data obtained by an EEG/pressure sensor matrix from the subject are sent to a signal processing module that derives digital EEG data from the electrical signal and pressure data without using sensors attached to a subject's head. The pressure data are used as a secondary signal to measure the physical orientation of the subject's head. The physical orientation is used to transform the derived EEG signal to a known coordinate axis (the orientation of the subject's head) to obtain useful, consistent, and accurate EEG data. The EEG may be used to determine a sleep state of a subject and to awaken the subject while in a particular state.