Brain’s Frequency Following Responses to Low-Frequency and Infrasound
Complaints and awareness about environmental low-frequency (LF) noise and infrasound (IS) have increased in recent years, but knowledge about perceptual mechanisms is limited. To evaluate the use of the brain’s frequency-following response (FFR) as an objective correlate of individual sensitivity to...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2020-04-01
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| Series: | Archives of Acoustics |
| Subjects: | |
| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2605 |
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| author | Carlos JURADO Torsten MARQUARDT |
| author_facet | Carlos JURADO Torsten MARQUARDT |
| author_sort | Carlos JURADO |
| collection | DOAJ |
| description | Complaints and awareness about environmental low-frequency (LF) noise and infrasound (IS) have increased in recent years, but knowledge about perceptual mechanisms is limited. To evaluate the use of the brain’s frequency-following response (FFR) as an objective correlate of individual sensitivity to IS and LF, we recorded the FFR to monaurally presented IS (11 Hz) and LF (38 Hz) tones over a 30-phon range for 11 subjects. It was found that 11-Hz FFRs were often significant already at ~0 phon, steeply grew to 20 phon, and saturated above. In contrast, the 38-Hz FFR growth was relatively shallow and continued to 60 phon. Furthermore, at the same loudness level (30 phon), the 11-Hz FFR strength was significantly larger (4.5 dB) than for 38 Hz, possibly reflecting a higher phase synchronization across the auditory pathway. Overall, unexpected inter-individual variability as well as qualitative differences between the measured FFR growth functions and typical loudness growth make interpretation of the FFR as objective correlate of IS and LF sensitivity difficult. |
| format | Article |
| id | doaj-art-58e179cbf60049b1b8aa6c8dbf6d3049 |
| institution | Kabale University |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2020-04-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-58e179cbf60049b1b8aa6c8dbf6d30492025-08-20T03:33:21ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2020-04-0145210.24425/aoa.2020.133151Brain’s Frequency Following Responses to Low-Frequency and InfrasoundCarlos JURADO0Torsten MARQUARDT1Universidad de Las AméricasUniversity College LondonComplaints and awareness about environmental low-frequency (LF) noise and infrasound (IS) have increased in recent years, but knowledge about perceptual mechanisms is limited. To evaluate the use of the brain’s frequency-following response (FFR) as an objective correlate of individual sensitivity to IS and LF, we recorded the FFR to monaurally presented IS (11 Hz) and LF (38 Hz) tones over a 30-phon range for 11 subjects. It was found that 11-Hz FFRs were often significant already at ~0 phon, steeply grew to 20 phon, and saturated above. In contrast, the 38-Hz FFR growth was relatively shallow and continued to 60 phon. Furthermore, at the same loudness level (30 phon), the 11-Hz FFR strength was significantly larger (4.5 dB) than for 38 Hz, possibly reflecting a higher phase synchronization across the auditory pathway. Overall, unexpected inter-individual variability as well as qualitative differences between the measured FFR growth functions and typical loudness growth make interpretation of the FFR as objective correlate of IS and LF sensitivity difficult.https://acoustics.ippt.pan.pl/index.php/aa/article/view/2605low-frequency hearingfrequency-following responseinfrasoundauditory brain |
| spellingShingle | Carlos JURADO Torsten MARQUARDT Brain’s Frequency Following Responses to Low-Frequency and Infrasound Archives of Acoustics low-frequency hearing frequency-following response infrasound auditory brain |
| title | Brain’s Frequency Following Responses to Low-Frequency and Infrasound |
| title_full | Brain’s Frequency Following Responses to Low-Frequency and Infrasound |
| title_fullStr | Brain’s Frequency Following Responses to Low-Frequency and Infrasound |
| title_full_unstemmed | Brain’s Frequency Following Responses to Low-Frequency and Infrasound |
| title_short | Brain’s Frequency Following Responses to Low-Frequency and Infrasound |
| title_sort | brain s frequency following responses to low frequency and infrasound |
| topic | low-frequency hearing frequency-following response infrasound auditory brain |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2605 |
| work_keys_str_mv | AT carlosjurado brainsfrequencyfollowingresponsestolowfrequencyandinfrasound AT torstenmarquardt brainsfrequencyfollowingresponsestolowfrequencyandinfrasound |