Abstract: A system and method for brainwave stimulation using altered natural stimuli is provided. The system may comprise a control module and a natural stimulus modulator and is configured to alter at least one natural stimulus signal with frequencies configured to induce brainwave stimulation especially in the range effective for Alzheimer's and other neurological pathologies. The system is configured to prolonged use such that subjects are not prohibited from participation in daily activities and therefore the brainwave stimulation is sufficiently prolonged for enhanced effectiveness. The method for brainwave stimulation may comprise the steps of applying alterations to and delivering at least one natural stimulus signal, measuring brainwave signals and adjusting the alterations accordingly.