Wearable device in the nature of a headband for detecting, measuring, and transmitting signals from the head, for personal use; wearable device in the nature of a headband for detecting, measuring, and transmitting signals associated with ocular movements, for personal use; downloadable software application for use in connection with a wearable device in the nature of a headband for receiving, recording, presenting, and analyzing data associated with brain process and brain activities; downloadable software application for use in connection with a wearable device in the nature of a headband for receiving, recording, presenting, and analyzing signals associated with ocular movements; downloadable mobile software application for use in connection with a wearable device in the nature of a headband for improvement of cognitive wellness, dream construction, and sleep health by analyzing brain signals, classifying sleep stages and calculating sleep statistics; downloadable mobile application for use in connection with a wearable device in the nature of a headband for receiving, recording, presenting, and analyzing bio-signals and data associated with bio-signals by conducting analysis, classifying sleep stages and calculating sleep statistics based on the received bio-signals and data associated with the bio-signals; downloadable mobile application for use in connection with a wearable device in the nature of a headband for provision of cognitive wellness, dream construction, and sleep health instructions by providing audio, visual or mechanical stimulations during the general sleep time-frame, to assist the user to enter a specific sleep stage or a specific cognitive state, such as dream or meditation