knee-jerk reaction. Fig. an automatic or reflex reaction; an immediate reaction made without examining causes or facts. With one of his typical knee-jerk reactions, he said no immediately, citing some moral argument that no one understood. See also: reaction.
What did you see when the patients head was rolled to the opposite side? In horizontal canal BPPV, you should have seen a direction change. When the horizontal nystagmus is geotropic, the BPPV is suspected to be canalithiasis, occurring on the side with the more intense nystagmus.
4. HORIZONTAL AND VERTICAL CONTROL. 4.01 General: Sufficient horizontal and, if applicable, vertical control surveys shall be established by. the Contractor for all photogrammetric mapping purposes. Prior to the establishment. of the necessary basic horizontal and vertical control, the Contractor shall make a.