visual threat

visual threat

The sudden presentation of a visual stimulus to a patient, typically a gesture that rapidly approaches the patient's eyes, e.g., the examiner's fast-moving hand. The normal neurological response to a visual threat is to blink the eyelids or flinch.
References in periodicals archive ?
BAE Systems BAE Systems Showcases Visual Threat Training Simulators at Army Expo.
Crayfish do not appear to represent a chemical or visual threat nor do they appear to elicit a stress response in the sacrificial guppy.
The visual threat recognition and avoidance trainer, called VTRAT, is gaining increasing use in the Air Force special operations community.
Huge offshore sites will obviously be welcomed because they pose no visual threat,but there are drawbacks: Navigation and fishing issues may be greaternWater may be deeper n nWeather and sea rougher Installation will be more difficult and costly Connection costs greater Maintenance more difficult and costlynInvestment and risk greater.
Designated as the NS-9003A-V2/9005A-V2 system, the new suite functions by detecting and identifying (with a 100 percent probability of intercept) over-the-horizon radar signals, generating audio and visual threat alarms and providing an automatic, active countermeasures response.
Now more than 60 of the Visual Threat Recognition and Avoidance Trainer (VTRAT) simulators are in use by the U.
The target drone is unique in that it is designed to provide medium-to-high performance at a price comparable with competitor's entry-level drones, able to convincingly mimic a variety of aircraft and missiles, including radar, infrared (IR) and visual threats.
Able to convincingly mimic a variety of aircraft and missiles, the target drone can simulate radar, infrared (IR) and visual threats.