Long-latency auditory evoked potentials with verbal and nonverbal stimuli<b><sup>,</sup></b>

Oppitz, Sheila Jacques; Didoné, Dayane Domeneghini; Silva, Débora Durigon da; Gois, Marjana; Folgearini, Jordana; Ferreira, Geise Corrêa; Garcia, Michele Vargas

doi:10.1016/j.bjorl.2014.10.005

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Brazilian Journal of Otorhinolaryngology

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ORIGINAL ARTICLES • Braz. j. otorhinolaryngol. 81 (6) • Nov-Dec 2015 • https://doi.org/10.1016/j.bjorl.2014.10.005 copy

Long-latency auditory evoked potentials with verbal and nonverbal stimuli^☆ ☆ Please cite this article as: Oppitz SJ, Didoné DD, da Silva DD, Gois M, Folgearini J, Ferreira GC, et al. Long-latency auditory evoked potentials with verbal and nonverbal stimuli. Braz J Otorhinolaryngol. 2015;81:647-52. ^,^{^☆☆} ☆☆ Institution: Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

INTRODUCTION:

Long-latency auditory evoked potentials represent the cortical activity related to attention, memory, and auditory discrimination skills. Acoustic signal processing occurs differently between verbal and nonverbal stimuli, influencing the latency and amplitude patterns.

OBJECTIVE:

To describe the latencies of the cortical potentials P1, N1, P2, N2, and P3, as well as P3 amplitude, with different speech stimuli and tone bursts, and to classify them in the presence and absence of these data.

METHODS:

A total of 30 subjects with normal hearing were assessed, aged 18-32 years old, matched by gender. Nonverbal stimuli were used (tone burst; 1000 Hz - frequent and 4000 Hz - rare); and verbal (/ba/ - frequent; /ga/, /da/, and /di/ - rare).

RESULTS:

Considering the component N2 for tone burst, the lowest latency found was 217.45 ms for the BA/DI stimulus; the highest latency found was 256.5 ms. For the P3 component, the shortest latency with tone burst stimuli was 298.7 with BA/GA stimuli, the highest, was 340 ms. For the P3 amplitude, there was no statistically significant difference among the different stimuli. For latencies of components P1, N1, P2, N2, P3, there were no statistical differences among them, regardless of the stimuli used.

CONCLUSION:

There was a difference in the latency of potentials N2 and P3 among the stimuli employed but no difference was observed for the P3 amplitude.

Keywords:
Audiology; Electrophysiology; Evoked potentials, auditory; Event-related potentials, P300

Variables	Stimuli												p ^§
	BA × GA			BA × DA			BA × DI			1000 × 4000 Hz
	n	Mean	SD	n	Mean	SD	n	Mean	SD	n	Mean	SD
P1
RE	26	62.2	8.1	27	59.8	8.1	25	65.5	18.3	22	62.2	11.9	0.393
LE	25	62.6	10.9	25	60.4	7.0	25	67.2	17.5	21	64.1	13.3	0.382
p-Value ^§	0.909			0.944			0.057			0.557

N1
RE	30	103.8^ab	10.4	30	103.3^ab	11.9	30	107.8ª	18.2	30	99.3^b	14.7	0.038
LE	30	108.3	10.5	30	103.7	10.9	30	109.3	17.9	30	101.9	16.2	0.067
p-Value	<0.001			0.726			0.178			0.135

P2
RE	30	173.2^ab	19.9	30	175.7^ab	20.4	30	182.7ª	26.2	30	171.5^b	26.7	0.026
LE	30	176.9^b	17.0	30	175.5^b	24.5	30	187.1ª	24.1	30	175.5^b	28.6	0.017
p-Value	0.140			0.945			0.016			0.153

N2
RE	23	245.7^ab	37.0	16	237.1^b	43.4	14	251.6ª	37.7	10	216.4^c	34.8	0.006
LE	22	255.3^ab	29.6	14	232.6^b	38.7	13	261.4ª	33.2	13	218.5c	39.2	0.003
p-Value	0.188			0.526			0.720			0.517

P3
RE	26	341.7^a	44.2	26	301.5^c	47.5	25	324.2b	59.2	25	297.0^b	27.3	0.005
LE	26	344.4^a	46.5	28	303.4^c	46.3	21	329.9^ab	63.4	24	300.4^b	36.4	0.002
p-Value	0.171			0.325			0.619			0.163

Amplitude of P3
RE	27	6.2	2.2	30	6.9	5.3	24	6.3	2.8	26	5.8	2.1	0.208
LE	26	6.6^b	2.1	28	7.8ª	5.4	21	6.7^b	2.5	24	6.1^c	2.3	0.027
p-Value	0.700			0.095			0.999			0.737

Variables	Stimuli
	BA × GA				BA × DA			BA × DI			1000 × 4000 Hz
	Yes		No		Yes		No	Yes		No	Yes			No
	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%
P1
RE	26	86.7	4	13.3	27	90.0	3	10.0	25	83.3	5	16.7	22	73.3	8	26.7
LE	25	83.3	5	16.7	25	83.3	5	16.7	25	83.3	5	16.7	21	70.0	9	30.0

N1
RE	30	100.0	0	0.0	30	100.0	0	0.0	30	100.0	0	0.0	30	100.0	0	0.0
LE	30	100.0	0	0.0	30	100.0	0	0.0	30	100.0	0	0.0	30	100.0	0	0.0

P2
RE	30	100.0	0	0.0	30	100.0	0	0.0	30	100.0	0	0.0	30	100.0	0	0.0
LE	30	100.0	0	0.0	30	100.0	0	0.0	30	100.0	0	0.0	30	100.0	0	0.0

N2
RE	23	76.7	7	23.3	16	53.3	14	46.7	14	46.7	16	53.3	10	33.3	20	66.7
LE	22	73.3	8	26.7	14	46.7	16	53.3	13	43.3	17	56.7	13	43.3	17	56.7

P3
RE	26	86.7	4	13.3	26	86.7	4	13.3	25	83.3	5	16.7	25	83.3	5	16.7
LE	26	86.7	4	13.3	28	93.3	2	6.7	21	70.0	9	30.0	24	80.0	6	20.0

Amp P3
RE	27	90.0	3	10.0	30	100.0	0	0.0	24	80.0	6	20.0	26	86.7	4	13.3
LE	26	86.7	4	13.3	28	93.3	2	6.7	21	70.0	9	30.0	24	80.0	6	20.0

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[1] * Corresponding author. E-mail:sheoppitz@hotmail.com (S.J. Oppitz).