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evoked response

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eĀ·voked response (-vkt)
n.
An alteration in the electrical activity of a particular part of the nervous system as a result of receiving a sensory stimulus.

evoked response
a technique for the detection of low amplitude electrical activity in response to stimuli for the purpose of evaluating sensory mechanisms. Called also evoked potential.

brainstem auditory evoked response (BAER)
variations in electromyographic or electroencephalographic recordings in response to sound stimuli. Used to evaluate brainstem lesions and hearing in dogs.
visual evoked response r's
electrical potentials to flash or pattern displays that are recorded over the occipital lobe region.

evoked response
Evoked potential Cardiology An area under an R wave that depends on the rate of myocardial depolarization; ↓ in cumulative R-wave area mandates ↑ pacing rate Neurology Any stimulus-evoked electrical potential recorded by EEG, which varies according to intensity, modality, location, and level of consciousness; ER is detectable over the appropriate cortical receptive areas by EEG after stimulation of sense organs or peripheral nerves–eg, brainstem auditory, transcortical motor, pattern shift visual, and somatosensory ERs; ERs may be used to guide surgical removal of tumors growing around important nerves. See White noise.


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Formed from the fact that the brain reacts by emitting an electrical charge when presented with a stimulus through the ears, eyes and nose - called a cortical evoked response -, this technology was able to narrow down the exact frequencies needed to evoke a similar response in the brain.
Joey's ongoing struggles with depression made the news--and evoked responses in fans also struggling with their own depressions.
Byline: Arab News DOHA: An international campaign launched by a Palestinian woman against civilian deaths in Gaza has evoked response from Qatar's national carrier which will transport one million candles to Gaza.
 
 
 
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