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horizontal gaze nystagmus Tag

Dayton DUI Attorney Charles Rowland > Posts tagged "horizontal gaze nystagmus" (Page 3)

The Prescription Drug Defense

While many people think of impaired driving as involving alcohol, we are increasingly seeing people accused of being impaired by prescription drugs.  Clients are surprised to learn that the same harsh penalties that apply to alcohol impairment also apply to prescription drug impairment.  You need an attorney who knows how to fight a drugged driving case.Drugged driving cases involving prescription drugs present a problem for law enforcement as indicators of prescription drug use are less apparent.  The standardized field sobriety tests are crude tools for detecting alcohol and may be useless in determining prescription drug impairment.  Challenging the officer's observations...

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Intoxilyzer 8000 Is Unreliable!

Today, in State v. Heather Reid, Case No. TRC 1100716 in the Circleville Municipal Court, Judge Gary Dumm has ruled that "The State of Ohio cannot expect this Court to find the Intoxilyzer 8000 reliable when the State refuses to address known problems and explain why those problems can be ignored."The Court calls for independent laboratory testing to address the issues raised by the adoption of the Intoxilyzer 8000: RFI, sample size of the chamber, volume of the sample tested, possible operator manipulation of the results, possible CMI modifications of the software without the knowledge of ODH and slope detector...

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Ohio DUI Law: State v. Haneberg (HGN While Seated In Patrol Car)

The 9th District Court of Appeals issued a great decision on the issue of substantial compliance.  Specifically, the issue involved giving the HGN test while the Defendant was seated in the car.  The Court found that this was not substantial compliance. (State v. Haneberg 5/29/2007, 2007-Ohio-2561, 9th District Court of Appeals).  If you need a DUI/OVI attorney anywhere in Dayton or the Miami Valley, contact Charles M. Rowland II at 937-318-1DUI (318-1384) or visit www.DaytonDUI.com ....

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Morphine, Heroin and the Horizontal Gaze Nystagmus

In the past years, my office has seen an increase in the number of “drugged” driving cases we receive. While arrests for marijuana make up the vast majority of those cases, we are also seeing a dramatic rise in prescription drug cases along with traffic stops implicating harder drugs such morphine and heroin.As with other impaired driving cases, it is vital that you know the observations that would be consistent with impairment by that drug.  It is also vital that you determine if the “standardized field sobriety test” protocol adopted in Ohio is applicable in recognizing clues of impairment due...

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Fatigue and the Horizontal Gaze Nystagmus Test

Can simple fatigue explain a person's poor performance on the Horizontal Gaze Nystagmus test?  According to recent studies the answer is yes.  Here is a link to the first formal study demonstrating that the smooth pursuit portion of the HGN test is affected by fatigue, http://iospress.metapress.com/content/8758844418248700.  The study found that sleep deprivation impaired smooth pursuit. Quoting from the study's abstract: Our findings showed that sleep deprivation deteriorated smooth pursuit gain, smooth pursuit accuracy and saccade velocity. Additionally, the ratio between saccade velocity and saccade amplitude was significantly decreased by sleep deprivation. However, as the length of sleep ...

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Horizontal Gaze Nystagmus; terms at a glance

Image via WikipediaDayton DUI Attorney Charles M. Rowland is the only attorney in Ohio to hold certification in Forensic Sobriety Assessment and he has been trained in the administration and evaluation of the Standardized Field Sobriety Tests in the same methods that law enforcement officers are trained to use.  Because of this training he is qualified to challenge the administration of the Horizontal Gaze Nystagmus (HGN) test at a motion to suppress hearing or at your DUI trial.  The HGN is a test of your eyes wherein the testing officer is looking for abnormal movements call saccades. ...

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Standardized Field Sobriety Tests

The Standardized Field Sobriety Test (SFST) is a battery of three tests administered and evaluated in a standardized manner to obtain validated indicators of impairment and establish probable cause for arrest. These tests were developed as a result of research sponsored by the National Highway Traffic Safety Administration (NHTSA) and conducted by the Southern California Research Institute. A formal program of training was developed and is available through NHTSA to help law enforcement officers become more skillful at detecting DWI suspects, describing the behavior of these suspects, and presenting effective testimony in court....

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Ohio DUI Law: Failure to File a Motion To Suppress

Should You File A Motion to Suppress?In State v. Thomas, 2011-Ohio-1987 (2nd Dist. Ct. App. 2011), the Defendant was convicted of felony OVI after a jury trial.  No motion to suppress was filed and it was determined during the jury trial that the officer wasn't sure whether he turned off his overhead lights during the horizontal gaze nystagmus portion of the standardized field sobriety tests, but stated that it was normal to do so.  An argument exists that doing the test in this manner should result in suppression of the test as the phenomenon of optokinetic...

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Challenging the Standardized Field Sobriety Tests

Did the Officer Conduct A Pre-Test Medical Check?  Prior to the administration of the Horizontal Gaze Nystagmus (HGN) test, an officer is required to examine a subject's eyes to assess for possible medical impairment. (NHTSA Student Manual, 2006 ed. VIII-5)   The examining officer should look atPupil size; Resting Nystagmus; Tracking AbilityIf any of these are present they should be noted and the test should be aborted.Resting Nystagmus is "referred to as a jerking of the eyes as they look straight ahead.  (NHTSA Student Manual, 2006 ed., VIII-4)  Officers are trained that if they see resting nystagmus "[i]ts presence usually indicates a...

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Standardized Field Sobriety Tests: What to Expect

Here is a VIDEO explanation of the Standardized Field Sobriety Tests from a live drinking session conducted by the Daytona Police Department.  Ohio DUI lawyer Charles M. Rowland has been certified in the administration and evaluation of the Standardized Field Sobriety Tests by attending the same National Highway Transportation Safety Administration class that is taken by law enforcement officers.  If you find yourself in need of an aggressive DUI attorney, contact Charles M. Rowland II at www.DaytonDUI.com, by calling 937-318-1DUI (318-1384) or 1-888-ROWLAND. ...

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