The invention relates to monitoring the neurological state of a patient. A bolt carrier can have a bolt that has a double cut cam having an unlocking cam surface that has sufficient dwell increase to delay a start of unlocking when the bolt carrier is used in an M4 carbine. When a device is inserted into the docking cradle, the electrical signals that are connected to the personal computer by way of the interface are then switched on. The composition contains an effective amount of one or more flavonoids or indanes selected from 3-O-rhamnopyranosylkaempferol, 3–2–1-indane-4,6-diol, quercitrin, rhamnitrin, rhamnocitrin, quercitrin-3-O\u2033-acetate and parthenocissin A. Other embodiments are described and claimed.