Brainstem auditory evoked response development in preterm and term baboons (Papio hamadryas)
Edwards, DA, Henderson-Smart, DJ, Pettigrew, AG, Wetzlar, A & Phippard, AF 1994, 'Brainstem auditory evoked response development in preterm and term baboons (Papio hamadryas)', Developmental Brain Research, vol. 82, no. 1-2, pp. 181-184.
Brainstem auditory evoked responses were recorded longitudinally from 11 neonatal baboons (Papio hamadryas), 6 of which were preterm. Recordings were made in unsedated animals from day 161 to day 362 after conception (term = 182 days). The pattern of development of both waveform morphology and of wave latency was consistent with that seen in the human neonate, with a rapid maturation of the response during the perinatal period, and then a slower development to adult values. Brainstem conduction time was measured from the wave I to wave IV interval, and this demonstrated a similar pattern, with a rapid decrease in latency up to term, and then decreasing more slowly to reach adult values by 4 months of age in the baboon.