obsolete decreased brainstem auditory evoked potential true decreased brainstem auditory brainstem response(s) decreased BAEP(s) reduced brainstem auditory evoked potential decreased ABRs reduction in the synchronous electrical activity generated by neurons in the ascending auditory system that can be recorded from scalp electrograms by using computer-averaged responses to short tone bursts; by varying frequency, cochlear function can be assessed throughout the hearing range; normally, ABR thresholds vary with frequency, from a sound pressure level (SPL) of 35 dB at 5.6 kHz (a relatively low frequency for a mouse) to 15 dB at 45.2 kHz (a relatively high frequency); each 20 dB corresponds to a tenfold change in amplitude; increases in auditory thresholds required to generate a response may indicate a decreased potential increased ABR threshold MP:0004765 reduced BAEP(s) MPheno.ontology decreased brainstem evoked responses decreased ABR amplitude reduced ABRs