<prompt> Positive head impulse test is suggestive of -Injury to vestibular nucleiInjury to peripheral vestibular nerveLesion in the brain stemInjury to Occulomotor nerve  <response>: Ans. is b i.e.. Injury7 to peripheral vestibular nerve Head Impulse Testo It is also called head thrust test.o It is test for the diagnosis of injury to vestibular nerve which forms the peripheral vestibular pathway,o Clinician asks the patient to fix his gaze on a target and then perform passive horizontal and vertical head impulses and observes the patients eyes.o Observation of a refixation saccade after the head impulse indicates decreased decreasedvestibulo ocular reflex secondary7 to peripheral vestibular lesions vestibular nerve involvement. 