In human neuroanatomy,<unk> s <unk> s), also called<unk><unk><unk>  responses (BAERs), are very small<unk><unk>  potentials in response to an<unk>  stimulus, which are recorded by electrodes placed on the scalp. They reflect neuronal activity in the<unk>  nerve, cochlear nucleus, superior olive, and inferior colliculus of the<unk> . They typically have a response latency of no more than six milliseconds with an amplitude of approximately one microvolt. Due to their small amplitude, 500 or more repetitions of the<unk>  stimulus are required in order to average out the random background electrical activity. Although it is possible to obtain a<unk>  to a pure tone stimulus in the hearing range, a more effective<unk>  stimulus contains a range of frequencies in the form of a short sharp click. Long and Allen were the first to report the abnormal<unk> s in an alcoholic woman who recovered from acquired central hypoventilation syndrome. These investigators hypothesized that their patient's<unk>  was poisoned, but not destroyed, by her chronic alcoholism. BAER testing is also recommended for dogs.
Brainstem auditory evoked potential
Bone conduction auditory brainstem response
Steady state visually evoked potential
Auditory brainstem response
Vibroacoustic stimulation
Conditioned play audiometry
Pure-tone audiometry
Humphrey visual field analyser