jerking motion made by the eye Horizontal Gaze Nystagmus (HGN) Horizontal Gaze Nystagmus test The the eye test prove that you are intoxicated Horizontal Gaze Nystagmus HGN – Horizontal Gaze Nystagmus Horizontal Gaze Nystagmus Horizontal Gaze Nystagmus Horizontal Gaze Nystagmus involuntary jerking motion of the eye Horizontal Nystagmus Test horizontal gaze nystagmus (HGN) field sobriety tests accuracy rate of 77 percent