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Department of Audiology, All India Institute of Speech and Hearing, Mysore, India
Himanshu Kumar Sanju   

Himanshu Kumar Sanju, Department of Audiology, All India Institute of Speech and Hearing, Mysore, India, e-mail: himanshusanjuaiish@gmail.com
Publication date: 2020-04-14
J Hear Sci 2016;6(1):40–47
A musician’s ability to produce a precise pitch must involve some kind of neuroplasticity, allowing them to control fundamental frequency, maintain target pitch, and accurately control pitch through auditory perceptual monitoring. The present study uses cortical auditory evoked potentials (CAEPs) to investigate neuroplasticity by assessing the latency of P1, N1, P2, and N2 as well as the peak-to-peak amplitudes P1–N1, N1–P2, and P2–N2 in two groups of subjects: Carnatic vocal musicians and non-musicians.

Material and Methods:
Two groups of normal hearing females aged 18 to 25 years. There were 20 Carnatic vocal musicians (Indian classical music of south India) and 20 non-musicians. Pure tones were used as stimuli.

Descriptive statistics revealed lower latency and greater peak-to-peak amplitude for all measures in the Carnatic vocal musicians compared to the non-musicians. MANOVA showed that vocalists had significantly better (shorter) N1, P2, and N2 latencies and significantly better (greater) peak-to-peak amplitude of P1–N1.

The present study showed some significantly enhanced CAEP parameters in Carnatic vocal musicians compared to non-musicians. This indicates that musical experience has an effect on the central auditory nervous system, and this form of neuroplasticity can be investigated with CAEPs.

Eggermont JJ. On the rate of maturation of sensory evoked potentials. Electroencephalogr Clin Neurophysiol, 1988; 70: 293–305.
Oates PA, Kurtzberg D, Stapells DR. Effects of sensorineural hearing loss on cortical event-related potential and behavioral measures of speech-sound processing. Ear Hear, 2002; 23: 399–415.
Wunderlich JL, Cone-Wesson BK, Shepherd R. Maturation of the cortical auditory evoked potential in infants and young children. Hear Res, 2006; 212: 185–202.
Picton TW, Hillyard SA. Human auditory evoked potentials. II. Effects of attention. Electroencephalogr Clin Neurophysiol, 1974; 36: 191–99.
Mendel MI, Hosick EC, Windman TR, Davis H, Hirsh SK, Dinges DF. Audiometric comparison of the middle and late components of the adult auditory evoked potentials awake and asleep. Electroencephalogr Clin Neurophysiol, 1975; 38: 27–33.
Golding M, Pearce W, Seymour J, Cooper A, Ching T, Dillon H. The relationship between obligatory cortical auditory evoked potentials (CAEPs) and functional measures in young infants. J Am Acad Audiol, 2007; 18: 117–25.
Novak GP, Kurtzberg D, Kreuzer JA, Vaughan HG. Cortical responses to speech sounds and their formants in normal infants: maturational sequence and spatiotemporal analysis. Electroencephalogr Clin Neurophysiol, 1989; 73: 295–305.
Pang EW, Taylor MJ. Tracking the development of the N1 from age 3 to adulthood: An examination of speech and non-speech stimuli. Clin Neurophysiol, 2000; 111: 388–97.
Chen BM, Buchwald JS. Midlatency auditory evoked responses: Differential effects of sleep in the cat. Electroencephalogr Clin Neurophysiol, 1986; 65: 373–82.
Näätänen R, Picton T. The N1 wave of the human electric and magnetic response to sound: A review and an analysis of the component structure. Psychophysiol, 1987; 24: 375–425.
Tremblay K, Kraus N, McGee T, Ponton C, Otis B. Central auditory plasticity: Changes in the N1–P2 complex after speechsound training. Ear Hear, 2001; 22: 79–90.
Buchwald JS, Erwin R, Van Lancker D, Guthrie D, Schwafel J, Tanguay P. Midlatency auditory evoked responses: P1 abnormalities in adult autistic subjects. Electroencephalogr Clin Neurophysiol, 1992; 84: 164–71.
Ponton CW, Eggermont JJ. Of kittens and kids: Altered cortical maturation following profound deafness and cochlear implant use. Audiol Neurootol, 2001; 6: 363–80.
Hari R, Hämäläinen M, Ilmoniemi R, Kaukoranta E, Reinikainen K, Salminen J et al. Responses of the primary auditory cortex to pitch changes in a sequence of tone pips: Neuromagnetic recordings in man. Neurosci Lett, 1984; 50: 127–32.
Vaughan HG, Ritter W. The sources of auditory evoked responses recorded from the human scalp. Electroencephalogr Clin Neurophysiol, 1970; 28: 360–67.
Crowley KE, Colrain IM. A review of the evidence for P2 being an independent component process: Age, sleep and modality. Clin Neurophysiol, 2004; 115: 732–44.
Kiehl KA, Smith AM, Hare RD, Mendrek A, Forster BB, Brink J et al. Limbic abnormalities in affective processing by criminal psychopaths as revealed by functional magnetic resonance imaging. Biol Psychiatry, 2001; 50: 677–84.
Näätänen R. Processing negativity: An evoked-potential reflection of selective attention. Psychol Bull, 1982; 92: 605–40.
Shahin A, Bosnyak DJ, Trainor LJ, Roberts LE. Enhancement of neuroplastic P2 and N1c auditory evoked potentials in musicians. J Neurosci, 2003; 23: 5545–52.
Polat Z, Ataş A. The investigation of cortical auditory evoked potentials responses in young adults having musical education. Balkan Med J, 2014; 31: 328–34.
Shahin A, Roberts LE, Trainor LJ. Enhancement of auditory cortical development by musical experience in children. Neuroreport, 2004; 15: 1917–21.
Amir O, Amir N, Kishon-Rabin L. The effect of superior auditory skills on vocal accuracy. J Acoust Soc Am, 2003; 113: 1102–8.
Jones JA, Munhall KG. Perceptual calibration of F0 production: evidence from feedback perturbation. J Acoust Soc Am, 2000; 108: 1246–51.
Mürbe D, Pabst F, Hofmann G, Sundberg J. Effects of a professional solo singer education on auditory and kinesthetic feedback: A longitudinal study of singers’ pitch control. J Voice, 2004; 18: 236–41.
Carhart R, Jerger J. Preferred method for clinical determination of pure-tone thresholds. J Speech Hear Disord, 1959; 24: 330–35.
Nikjeh DA, Lister JJ, Frisch SA. Hearing of note: An electrophysiologic and psychoacoustic comparison of pitch discrimination between vocal and instrumental musicians. Psychophysiol, 2008; 45: 994–1007.
Sangamanatha AV, Fernandes J, Bhat J, Srivastava M, Prakrithi SU. Temporal resolution in individuals with and without musical training. J Ind Sp Hear Assoc, 2001; 26: 27–35.
Mishra SK, Panda MR. Experience-dependent learning of auditory temporal resolution: Evidence from Carnatic-trained musicians. Neuroreport, 2014; 25: 134–37.
Mishra SK, Panda MR, Raj S. Influence of musical training on sensitivity to temporal fine structure. Int J Audiol, 2015; 54: 220–26.
Kumar P, Sanju HK, Nikhil J. Temporal resolution and active auditory discrimination skill in vocal musicians. Int Arch Otorhinolaryngol, 2015 (early online, ms in press).
Sanju HK, Kumar P. Research suggests new avenues for music training in aural rehabilitation. Hear Rev, 2015; 22: 34.
Musacchia G, Strait D, Kraus N. Relationships between behavior, brainstem and cortical encoding of seen and heard speech in musicians and non-musicians. Hear Res, 2008; 241: 34–42.
Trainor LJ, Shahin A, Roberts LE. Effects of musical training on the auditory cortex in children. Ann NY Acad Sci, 2003; 999: 506–13.
Atienza M, Cantero JL, Dominguez-Marin E. The time course of neural changes underlying auditory perceptual learning. Learn Mem, 2002; 9: 138–50.
Sharma M, Purdy SC, Kelly AS. The contribution of speechevoked cortical auditory evoked potentials to the diagnosis and measurement of intervention outcomes in children with auditory processing disorder. Semin Hear, 2014; 35: 51–64.
Pfefferbaum A, Horvath TB, Roth WT, Tinklenberg JR, Kopell BS. Auditory brain stem and cortical evoked potentials in schizophrenia. Biol Psychiatry, 1980; 15: 209–23.
Bruneau N, Roux S, Adrien JL, Barthélémy C. Auditory associative cortex dysfunction in children with autism: Evidence from late auditory evoked potentials (N1 wave-T complex). Clin Neurophysiol, 1999; 110: 1927–34.
Purdy KS, Mcmullen PA, Freedman M. Changes to the object recognition system in patients with dementia of the Alzheimer’s type. Brain Cogn, 2002; 49: 213–16.
Leite RA, Wertzner HF, Matas CG. Long latency auditory evoked potentials in children with phonological disorder. Pro Fono, 2010; 22: 561–66.