| 摘要 |
<p>Apparatus for measuring mental activity as an indication of blood flow rate comprises a meter having a finger receiving socket (463) between rods or optical fibres (461, 462), one of which is adjacent a light source (468) and the other of which is adjacent a photo receptor (470). A scale (445) having a needle (446) is present and is calibrated by knobs (447,448) to a minimum value.</p> |
