Effects of the mp3 player on hearing

Barcelos, Daniela Dalapicula; Dazzi, Natália Saliba

doi:10.1590/1982-0216201422112

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Sumário

ORIGINAL ARTICLES • Rev. CEFAC 16 (3) • may-jun 2014 • https://doi.org/10.1590/1982-0216201422112 copy

Effects of the mp3 player on hearing

Authorship SCIMAGO INSTITUTIONS RANKINGS

Purpose

to investigate if there is damage and the extent of even using MP3 player.

Methods

to get the best results on the extension of this harm, in addition to the Distortion Product Otoacustic Emission, the groups were also evaluated with Transient Evoked Otoacustic Emissions. They were asked to listen to MP3 players and divided into two groups, 15 of them belonged to the controlled group (medium intensity of 85 dBNA) and the others in the analysis group (medium intensity of 110 dBNA). The method used for the analysis was inferencial (test “t” to parallel samples).

Results

the results showed that the controlled group has presented alterations in the frequency of 1,5kHz in the Transient Evoked Otoacustic Emissions and 6 kHz in the frequency of Distortion Product. While the study group showed alteration in the frequency of 2, 3, 4 kHz and also in the medium amplitude of all frequencies in the Transient Evoked Otoacustic Emissions and in the frequencies of 3 and 6 kHz in the Distortion Product.

Conclusion

this study confirmed that those people exposed to intense noise, generated by the MP3 Player, showed a significant loss of their hearing extension, indicating a temporary change in their cochlea cells that might turn into a permanent loss when continuously exposed to it.

Hearing Aids; Music; Hearing Loss; Acoustic Stimulation


Right Ear
	t	Value-p	Result

% (1.0)	2,137	0,51	There is no difference between the groups
AMP (1.0)	-,638	,534	There is no difference between the groups
S/N (1.0)	1,740	,104	There is no difference between the groups
% (1.5)	2,533	,024	Is there a difference between groups
AMP (1.5)	-,344	,736	There is no difference between the groups
S/N (1.5)	1,336	,203	There is no difference between the groups
% (2.0)	-,140	,891	There is no difference between the groups
AMP (2.0)	-,134	,896	There is no difference between the groups
S/N (2.0)	,265	,795	There is no difference between the groups
% (3.0)	,054	,958	There is no difference between the groups
AMP (3.0)	-,241	,813	There is no difference between the groups
S/N (3.0)	,750	,466	There is no difference between the groups
% (4.0)	1,840	,087	There is no difference between the groups
AMP (4.0)	1,426	,176	There is no difference between the groups
S/N (4.0)	1,851	,085	There is no difference between the groups
% (ALL)	1,911	,077	There is no difference between the groups
AMP (ALL)	-,045	,965	There is no difference between the groups
S/N (ALL)	2,054	,059	There is no difference between the groups
Left Ear
	t	Value-p	Result

% (1.0)	1,480	,161	There is no difference between the groups
AMP (1.0)	-,190	,915	There is no difference between the groups
S/N (1.0)	,987	,340	There is no difference between the groups
% (1.5)	-,240	,814	There is no difference between the groups
AMP (1.5)	-,274	,788	There is no difference between the groups
S/N (1.5)	,052	,959	There is no difference between the groups
% (2.0)	1,600	,132	There is no difference between the groups
AMP (2.0)	,304	,765	There is no difference between the groups
S/N (2.0)	1,620	,128	There is no difference between the groups
% (3.0)	1,245	,233	There is no difference between the groups
AMP (3.0)	1,243	,234	There is no difference between the groups
S/N (3.0)	,569	,578	There is no difference between the groups
% (4.0)	1,146	,271	There is no difference between the groups
AMP (4.0)	-,318	,755	There is no difference between the groups
S/N (4.0)	1,325	,206	There is no difference between the groups
% (ALL)	1,612	,129	There is no difference between the groups
AMP (ALL)	,681	,507	There is no difference between the groups
S/N (ALL)	1,895	,079	There is no difference between the groups


Right Ear
	t	Value-p	Result

Level (2.0)	1,658	,120	There is no difference between the groups
S/N (2.0)	,232	,820	There is no difference between the groups
Level (3.0)	,532	,603	There is no difference between the groups
S/N (3.0)	,672	,512	There is no difference between the groups
Level (4.0)	,922	,372	There is no difference between the groups
S/N (4.0)	1,724	,107	There is no difference between the groups
Level (6.0)	2,236	,042	Is there a difference between groups
S/N (6.0)	3,212	,006	Is there a difference between groups
Level (8.0)	-,045	,965	There is no difference between the groups
S/N (8.0)	1,344	,200	There is no difference between the groups
Left Ear
	t	Value-p	Result

Level (2.0)	,328	,748	There is no difference between the groups
S/N (2.0)	-,867	,401	There is no difference between the groups
Level (3.0)	1,338	,202	There is no difference between the groups
S/N (3.0)	1,005	,332	There is no difference between the groups
Level (4.0)	1,333	,204	There is no difference between the groups
S/N (4.0)	,324	,751	There is no difference between the groups
Level (6.0)	1,459	,167	There is no difference between the groups
S/N (6.0)	1,282	,221	There is no difference between the groups
Level (8.0)	,361	,724	There is no difference between the groups
S/N (8.0)	,910	,378	There is no difference between the groups


Right Ear
	t	Value-p	Result

% (1.0)	,227	,824	There is no difference between the groups
AMP (1.0)	1,201	,250	There is no difference between the groups
S/N (1.0)	,359	,725	There is no difference between the groups
% (1.5)	,149	,884	There is no difference between the groups
AMP (1.5)	,658	,521	There is no difference between the groups
S/N (1.5)	1,097	,291	There is no difference between the groups
% (2.0)	,525	,607	There is no difference between the groups
AMP (2.0)	3,706	,002	Is there a difference between groups
S/N (2.0)	1,183	,257	There is no difference between the groups
% (3.0)	1,706	,110	There is no difference between the groups
AMP (3.0)	8,256	,000	Is there a difference between groups
S/N (3.0)	2,902	,012	Is there a difference between groups
% (4.0)	-,486	,635	There is no difference between the groups
AMP (4.0)	3,694	,002	Is there a difference between groups
S/N (4.0)	,180	,860	There is no difference between the groups
% (ALL)	1,914	,076	There is no difference between the groups
AMP (ALL)	3,661	,003	Is there a difference between groups
S/N (ALL)	2,743	,016	Is there a difference between groups
Left Ear
	t	Value-p	Result

% (1.0)	1,177	,259	There is no difference between the groups
AMP (1.0)	1,314	,210	There is no difference between the groups
S/N (1.0)	-,324	,751	There is no difference between the groups
% (1.5)	1,228	,240	There is no difference between the groups
AMP (1.5)	1,039	,316	There is no difference between the groups
S/N (1.5)	1,043	,314	There is no difference between the groups
% (2.0)	,741	,471	There is no difference between the groups
AMP (2.0)	2,171	,048	Is there a difference between groups
S/N (2.0)	,760	,460	There is no difference between the groups
% (3.0)	2,460	,028	Is there a difference between groups
AMP (3.0)	3,679	,002	Is there a difference between groups
S/N (3.0)	2,542	,023	Is there a difference between groups
% (4.0)	1,761	,100	There is no difference between the groups
AMP (4.0)	3,382	,004	Is there a difference between groups
S/N (4.0)	1,562	,141	There is no difference between the groups
% (ALL)	1,513	,153	There is no difference between the groups
AMP (ALL)	4,526	,000	Is there a difference between groups
S/N (ALL)	1,896	,079	There is no difference between the groups


Right Ear
	t	Value-p	Result

Level (2.0)	1,553	,143	There is no difference between the groups
S/N (2.0)	,503	,623	There is no difference between the groups
Level (3.0)	3,461	,004	Is there a difference between groups
S/N (3.0)	1,604	,131	There is no difference between the groups
Level (4.0)	1,532	,148	There is no difference between the groups
S/N (4.0)	1,250	,232	There is no difference between the groups
Level (6.0)	2,880	,012	Is there a difference between groups
S/N (6.0)	,553	,589	There is no difference between the groups
Level (8.0)	1,111	,285	There is no difference between the groups
S/N (8.0)	,062	,951	There is no difference between the groups
Left Ear
	t	Value-p	Result

Level (2.0)	1,075	,301	There is no difference between the groups
S/N (2.0)	1,328	,206	There is no difference between the groups
Level (3.0)	3,338	,005	Is there a difference between groups
S/N (3.0)	1,272	,224	There is no difference between the groups
Level (4.0)	2,011	,064	There is no difference between the groups
S/N (4.0)	-1,104	,288	There is no difference between the groups
Level (6.0)	1,027	,322	There is no difference between the groups
S/N (6.0)	-,184	,856	There is no difference between the groups
Level (8.0)	-,384	,707	There is no difference between the groups
S/N (8.0)	,639	,533	There is no difference between the groups

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

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[TFN01t01_en] * Dependent On: represents the same individual in both tests conducted, i.e. the before and the after, and if present in the tables of 1 to 4.