®®®® SIIA Público

Título del libro: Monkeys: Brain Development, Social & Hormonal Mechanisms And Zoonotic Diseases
Título del capítulo: Brainstem's auditory evoked potentials and interval values in rhesus monkeys (Macaca Mulatta) at different intensities (70-30 DB)

Autores UNAM:
FELIX EDUARDO TENA BETANCOURT;
Autores externos:

Idioma:
Inglés
Año de publicación:
2014
Palabras clave:

Brainstem's auditory evoked potentials (BAEP); Interpeak latencies; Latencies


Resumen:

Audition plays a critical role in the development of elaborated behaviors strongly dependent on the phylogenetic scale or evolutionary tree. Recordings of Brainstem Auditory Evoked Potentials (BAEPs) tend to show definite differences of response which are deeply influenced by the parameters of stimuli, environmental conditions of registration and characteristics of the species; such facts make the establishment of baseline data-values for each laboratory essential. The aim of this study was to study auditory evoked responses in the Macaca mulatta species through the brainstem's auditory evoked potentials (BAEP), in order to obtain normative data on latency values and electrophysiological responses of the different components of BAEPs in rhesus monkeys using different intensities (70-30 dB). This study was carried out using 14 Rhesus macaques (Macaca mulatta) averaging 7 years-old and allotted into two groups of 7 males and 7 females weighing approximately 7 kg and 5 kg respectively. BAEP's were recorded through the stimulation of the ear using rarefaction "clicks" at 70, 50 and 30 dB of intensity. The cerebral electric activity was collected using gold disk electrodes placed at the Cz (+), A1, A2 (-) and Fz derivations as ground according to the 10/20 international system. Four waves were observed in males and females in response to the different intensities applied. Since no significant differences were found in the Student t-test for the separated afferences, afferents were unified, thus evaluating absolute latencies of the four waves and the intervals I-II, II-IV and I-IV in the 14 subjects at different intensities. © 2014 by Nova Science Publishers, Inc. All rights reserved.


Entidades citadas de la UNAM: