Naveen, K.V.Nagendra H.R.Telles, ShirleyGarner, C.2010-04-012010-04-011999http://www.libraryofyoga.com/handle/123456789/74Research Papers - Transcranial Doppler studiesTranscranial Doppler ultrasound (TCD) is a noninvasive method of studying cerebral haemodynamics, allowing the measurement of blood velocity in the major intracranial vessels using ultrasound signals transmitted through bone.[1] Cerebral circulation is controlled mainly by auto regulation and fluctuations in blood CO2 and O2, with scarcely any changes when arterial pressure is constant between 50 and 140mmHg.[2] We recorded the blood velocity in both right and left middle cerebral arteries (MCA) in a 26 year old male volunteer with TCD (DWL Ultrasonic Doppler System, Sipplingen, Germany).en-USTranscranialhaemodynamics,Article