| 摘要 |
<p>An apparatus for determining characteristics of pulsatility of the brain 5 comprises: an ultra-wideband microwave transceiver 1 arranged to generate ultra-wideband microwave pulses 6; a transmitting means 3 arranged to transmit the ultra-wideband microwave pulses; and a receiving means 3 arranged to receive a signal corresponding to detection of the pulses. In an embodiment this may be a transmitting/receiving micro patch antenna. The apparatus may be incorporated into a motorcycle helmet for example. The determined characteristic may be the frequency or amplitude of pulsation of the first part of the brain. The apparatus may further include a warning indicator that outputs a warning if the determined characteristics are outside of a predetermined range.</p> |
