Study of the neural plasticity in adults and older adults new hearing aid users

Souza, Gabriela Valiengo de; Matas, Carla Gentile; Silva, Liliane Aparecida Fagundes; Lobo, Ivone Ferreira Neves; Samelli, Alessandra Giannella

doi:10.1590/1982-0216/20202253420

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

ORIGINAL ARTICLES • Rev. CEFAC 22 (5) • 2020 • https://doi.org/10.1590/1982-0216/20202253420 copy

Study of the neural plasticity in adults and older adults new hearing aid users

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Purpose:

to monitor, with long-latency auditory evoked potentials, the plasticity of the central auditory pathways in adults and older adults, new users of hearing aids.

Methods:

a total of 15 adults and older adults, aged 55 to 85 years, participated in the research. They had a symmetric bilateral mild to moderate sensorineural hearing loss, without previous experience with any type of hearing aid. The long-latency auditory evoked potentials were conducted with and without amplification, at 60 and 75 dBnHL, with speech stimulus in a sound field, in two assessment moments: up to one week after fitting the hearing aid and after six months of its use. The Student’s t-test was used for statistical analysis, considering significant the p-value < 0.05.

Results:

responses with lower latency values were observed for the right ear in the second assessment. Comparing the first with the second assessment, both with and without the hearing aid, an increase in the amplitude of P2-N2 was observed, as well as an increase in the latency of the P2 component at the intensity of 75 dBnHL. No statistically significant differences were observed at the intensity of 60 dBnHL. Conclusion:the use of the hearing aid promoted the plasticity of the central auditory pathways, increasing the number of neurons responsive to the sound stimuli.

Keywords:
Hearing Aids; Neuronal Plasticity; Evoked Potentials, Auditory; Hearing Loss; Sensorial Deprivation

		1^st Assessment	p-value	2^nd Assessment	p-value
P1	R	86.0 (±14.9)	0.410	84.7 (±16.8)	0.591
P1	L	89.4 (±11.6)	0.410	83.7 (±18.4)	0.591
N1	R	132.7 (±16.3)	0.560	130.6 (±26.8)	0.819
N1	L	134.5 (±16.5)	0.560	131.6 (±29.2)	0.819
P2	R	222.0 (±26.4)	0.740	231.4 (±51.0)	0.341
P2	L	220.0 (±26.9)	0.740	225.4 (±60.9)	0.341
N2	R	277.7 (±40.4)	0.090	278.3 (±57.8)	0.673
N2	L	268.0 (±38.6)	0.090	282.5 (±61.5)	0.673
P3	R	363.3 (±49.0)	0.700	375.4 (±51.7)	0.473
P3	L	367.1 (±55.0)	0.700	367.1 (±43.5)	0.473
P1-N1	R	4.2 (±2.4)	0.210	3.3 (±1.2)	0.905
P1-N1	L	4.6 (±1.8)	0.210	3.2 (±1.6)	0.905
P2-N2	R	2.7 (±3.2)	0.517	2.4 (±2.1)	0.709
P2-N2	L	2.4 (±1.4)	0.517	2.3 (±2.0)	0.709
N2-P3	R	3.9 (±2.9)	0.454	4.6 (±3.0)	0.574
N2-P3	L	4.5 (±2.9)	0.454	5.1 (±3.2)	0.574

		1^st Assessment	p-value	2^nd Assessment	p-value
P1	R	79.3 (±13.9)	0.260	82.3 (±15.7)	0.012*
P1	L	86.7 (±25.7)	0.260	96.2 (±22.4)	0.012*
N1	R	121.4 (±21.5)	0.258	122.9 (±19.8)	0.038*
N1	L	129.4 (±19.4)	0.258	134.9 (±28.2)	0.038*
P2	R	202.1 (±50.9)	0.372	208.2 (±40.0)	0.300
P2	L	217.5 (±68.4)	0.372	219.1 (±41.0)	0.300
N2	R	243.1 (±53.5)	0.930	259.2 (±46.1)	0.822
N2	L	242.3 (±52.9)	0.930	261.3 (±48.1)	0.822
P3	R	392.6 (±46.3)	0.509	353.7 (±57.3)	0.129
P3	L	385.5 (±46.4)	0.509	375.7 (±57.9)	0.129
P1-N1	R	3.2 (±2.2)	0.383	3.4 (±2.0)	0.900
P1-N1	L	2.8 (±1.6)	0.383	3.2 (±2.0)	0.900
P2-N2	R	2.0 (±1.1)	0.842	2.3 (±1.8)	1.000
P2-N2	L	2.1 (±1.4)	0.842	2.3 (±1.4)	1.000
N2-P3	R	4.5 (±3.2)	0.234	4.1 (±3.4)	0.700
N2-P3	L	5.1 (±2.9)	0.234	4.3 (±2.4)	0.700

		1^st Assessment	p-value	2^nd Assessment	p-value
P1	R	80.3 (±16.0)	0.664	78.9 (±22.4)	0.251
P1	L	81.7 (±8.1)	0.664	83.3 (±15.0)	0.251
N1	R	129.8 (±15.2)	0.944	122.3 (±21.1)	0.148
N1	L	130.0 (±13.8)	0.944	128.3 (±18.1)	0.148
P2	R	202.9 (±40.0)	0.284	224.6 (±34.4)	0.698
P2	L	214.3 (±25.5)	0.284	226.1 (±35.1)	0.698
N2	R	249.7 (±41.5)	0.729	284.5 (±48.9)	0.958
N2	L	252.7 (±26.7)	0.729	285.0 (±37.7)	0.958
P3	R	359.6 (±37.3)	0.660	348.1 (±38.7)	0.813
P3	L	355.6 (±30.0)	0.660	346.8 (±35.1)	0.813
P1-N1	R	4.0 (±1.3)	0.280	4.3 (±1.9)	0.383
P1-N1	L	4.3 (±1.2)	0.280	4.5 (±1.5)	0.383
P2-N2	R	2.3 (±1.2)	0.181	3.2 (±2.2)	0.946
P2-N2	L	2.1 (±1.2)	0.181	3.2 (±2.4)	0.946
N2-P3	R	4.6 (±3.1)	0.306	5.2 (±3.3)	0.509
N2-P3	L	5.6 (±3.8)	0.306	4.8 (±3.2)	0.509

		1^st Assessment	p-value	2^nd Assessment	p-value
P1	R	74.7 (±9.8)	0.283	75.9 (±9.7)	0.046*
P1	L	77.6 (±10.9)	0.283	81.2 (±8.1)	0.046*
N1	R	123.1 (±15.4)	0.559	126.3 (±10.7)	0.731
N1	L	126.3 (±12.4)	0.559	125.3 (±10.4)	0.731
P2	R	202.6 (±28.6)	0.449	216.0 (±34.0)	0.354
P2	L	242.9 (±31.3)	0.449	220.7 (±34.8)	0.354
N2	R	244.3 (±38.2)	0.872	266.7 (±52.5)	0.354
N2	L	242.9 (±31.3)	0.872	277.1 (±45.5)	0.354
P3	R	334.1 (±48.3)	0.138	349.0 (±34.8)	0.932
P3	L	347.8 (±48.4)	0.138	348.3 (±38.7)	0.932
P1-N1	R	4.2 (±1.8)	0.151	4.3 (±1.9)	0.982
P1-N1	L	4.9 (±1.3)	0.151	4.3 (±1.6)	0.982
P2-N2	R	2.0 (±1.6)	0.769	2.5 (±1.7)	0.077
P2-N2	L	1.9 (±0.9)	0.769	3.2 (±1.9)	0.077
N2-P3	R	4.8 (±3.8)	0.354	4.5 (±2.2)	0.932
N2-P3	L	4.2 (±2.4)	0.354	5.6 (±3.6)	0.932

ABRAMO Associação Brasileira de Motricidade Orofacial Rua Uruguaiana, 516, Cep 13026-001 Campinas SP Brasil, Tel.: +55 19 3254-0342 - São Paulo - SP - Brazil
E-mail: revistacefac@cefac.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] Corresponding address: Gabriela Valiengo de Souza, Rua Cipotânea, 51, Cidade Universitária, CEP: 05360-160 - São Paulo, São Paulo, Brasil, E-mail: gabifeital@hotmail.com