Patent US 4,035,930

This invention provides a time selective information dissemination system and method for sleep teaching. An information sensor, which is responsive to information that has been recorded on a recording medium, is provided by this system and control mechanism is provided to respond to signals correlated to recording medium travel for controlling transmission from the information sensor to an output apparatus whereby information is utilized in sleep teaching by being disseminated, based upon sensed recording medium travel over predetermined time intervals.