AUTHORS: Sanjay H. S., Prithvi B. S., Nikhil M. N.

Download as PDF

ABSTRACT: Temporal resolution often links to psychophysics and the ability of individuals to temporally resolve the sounds serve as an indication of auditory perception. The present work emphasized on the assessment of the temporal resolution and the psychophysics involved for subjects without any auditory pathological history, but with a constant exposure to noise and solvents in their work place. 44 males of age group 20 – 50 years with no known auditory disorders from two different industries, employees of Chemical Industry (CH) exposed to a combination of noise as well as solvents and the employees of Fabrication Industry (FB) with regular exposure to noise alone, in their daily routine at their work place were considered for this experiment and were made to undergo Frequency Response Test (FRT) and Absolute Threshold Test (ATT). While the results showed a clear deterioration in the auditory perception for both FRT and ATT approach, this deterioration was found to be relatively lesser in FB as compared to CH. This was attributed due to the exposure of noise in case of FB while the CH were exposed to both noise and solvents at their work place thereby proving to have a higher impact on the auditory perception in case of a combined exposure to noise as well as to solvents as compared to those with an exposure to noise alone. Hence, based on the statistical analysis of the results obtained for FRT and ATT, it was concluded that the FB have a better auditory temporal resolution than the CH

KEYWORDS: Psychophysics, Auditory Temporal Resolution, Frequency Response Test, Absolute Threshold Test, occupational exposure, Noise, Solvents.

REFERENCES:

[1] Patel, Aniruddh D., and John R. Iversen. 'The evolutionary neuroscience of musical beat perception: the Action Simulation for Auditory Prediction (ASAP) hypothesis.' Frontiers in Systems Neuroscience 8 (2014).

[2] Dajani, Hilmi R., and Terence W. Picton. 'Human auditory steady-state responses to changes in interaural correlation.' Hearing research 219.1 (2006): 85-100.

[3] Nordenstrom, Benita K., Magdalene H. Chalikia, and Elizabeth M. Ebsen. 'The effects of pitch changes on the perception of vowel sequences.' The Journal of the Acoustical Society of America 96.5 (1994): 3284-3285.

[4] Gaskill, Sally A., and Ann M. Brown. 'The behavior of the acoustic distortion product, 2 f 1− f 2, from the human ear and its relation to auditory sensitivity.' The Journal of the Acoustical Society of America 88.2 (1990): 821-839.

[5] Valenza, Gaetano, et al. 'Revealing real-time emotional responses: a personalized assessment based on heartbeat dynamics.' Scientific reports 4 (2014).

[6] Lawrence, Steve, et al. 'Face recognition: A convolutional neural-network approach.' IEEE transactions on neural networks 8.1 (1997): 98- 113.

[7] Wilkinson, Lawrence S., et al. 'Social isolation in the rat produces developmentally specific deficits in prepulse inhibition of the acoustic startle response without disrupting latent inhibition.' Neuropsychopharmacology10.1 (1994): 61-72.

[8] Pollack, Irwin. 'Effects of high pass and low pass filtering on the intelligibility of speech in noise.' The Journal of the Acoustical Society of America 20.3 (1948): 259-266.

[9] Dimitrijevic, Andrew, et al. 'Estimating the audiogram using multiple auditory steady-state responses.' Journal of the American Academy of Audiology 13.4 (2002): 205-224.

[10] Hodgdon, Kathleen K., Anthony A. Atchley, and Robert J. Bernhard. 'Low frequency noise study.' Final report, PARTNER Low Frequency Study Group, Report No. PARTNER-COE-2007- 001 (2007).

[11] Norman, Geoff. 'Likert scales, levels of measurement and the “laws” of statistics.' Advances in health sciences education 15.5 (2010): 625-632.

[12] Caviedes, Jorge, and Sabri Gurbuz. 'No-reference sharpness metric based on local edge kurtosis.' Image Processing. 2002. Proceedings. 2002 International Conference on. Vol. 3. IEEE, 2002.

[13] Mukaka, Mavuto M. 'A guide to appropriate use of correlation coefficient in medical research.' Malawi Medical Journal 24.3 (2012): 69-71.

[14] Knopp, Raymond. 'Coding and multiple access over fading channels.' Ecole Polytehnique Fédérale de Lausanne (1997).

[15] Fisher, Ronald Aylmer, and Leonard Henry Caleb Tippett. 'Limiting forms of the frequency distribution of the largest or smallest member of a sample.' Mathematical Proceedings of the Cambridge Philosophical Society. Vol. 24. No. 2. Cambridge University Press, 1928.

[16] Horkheimer, Max, and Theodor W. Adorno. 'The culture industry: Enlightenment as mass deception.' Media and cultural studies: Keyworks(2001): 71-101.

[17] DeCarlo, Lawrence T. 'On the meaning and use of kurtosis.' Psychological methods 2.3 (1997): 292.

[18] Sanjay H S, Bhargavi S, Madhuri S, “Auditory psychophysical analysis of healthy individuals based on Audiometry and Absolute threshold tests”, International journal of engineering and technology, Vol 7(9) (2018): 99-106