Time–frequency analysis of gustatory event related potentials (gERP) in taste disorders
Abstract In taste disorders, the key to a correct diagnosis and an adequate treatment is an objective assessment. Compared to psychophysical tests, EEG-derived gustatory event-related potentials (gERP) could be used as a less biased measure. However, the responses identified using conventional time-...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-52986-5 |
| _version_ | 1797274929677205504 |
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| author | Mariano Mastinu Lisa Sophie Grzeschuchna Coralie Mignot Cagdas Guducu Vasyl Bogdanov Thomas Hummel |
| author_facet | Mariano Mastinu Lisa Sophie Grzeschuchna Coralie Mignot Cagdas Guducu Vasyl Bogdanov Thomas Hummel |
| author_sort | Mariano Mastinu |
| collection | DOAJ |
| description | Abstract In taste disorders, the key to a correct diagnosis and an adequate treatment is an objective assessment. Compared to psychophysical tests, EEG-derived gustatory event-related potentials (gERP) could be used as a less biased measure. However, the responses identified using conventional time-domain averaging show a low signal-to-noise ratio. This study included 44 patients with dysgeusia and 59 healthy participants, who underwent a comprehensive clinical examination of gustatory function. gERPs were recorded in response to stimulation with two concentrations of salty solutions, which were applied with a high precision gustometer. Group differences were examined using gERP analyzed in the canonical time domain and with Time–Frequency Analyses (TFA). Dysgeusic patients showed significantly lower scores for gustatory chemical and electrical stimuli. gERPs failed to show significant differences in amplitudes or latencies between groups. However, TFA showed that gustatory activations were characterized by a stronger power in controls than in patients in the low frequencies (0.1–4 Hz), and a higher desynchronization in the alpha-band (8–12 Hz). Hence, gERPs reflect the altered taste sensation in patients with dysgeusia. TFA appears to enhance the signal-to-noise ratio commonly present when using conventional time-domain averaging, and might be of assistance for the diagnosis of dysgeusia. |
| first_indexed | 2024-03-07T15:05:13Z |
| format | Article |
| id | doaj.art-5a5bc2a1b5cf47cfb70f09d19e1efa40 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-07T15:05:13Z |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-5a5bc2a1b5cf47cfb70f09d19e1efa402024-03-05T18:55:10ZengNature PortfolioScientific Reports2045-23222024-01-0114111110.1038/s41598-024-52986-5Time–frequency analysis of gustatory event related potentials (gERP) in taste disordersMariano Mastinu0Lisa Sophie Grzeschuchna1Coralie Mignot2Cagdas Guducu3Vasyl Bogdanov4Thomas Hummel5Department of Otorhinolaryngology, Smell & Taste Clinic, Technische Universität DresdenDepartment of Otorhinolaryngology, Smell & Taste Clinic, Technische Universität DresdenDepartment of Otorhinolaryngology, Smell & Taste Clinic, Technische Universität DresdenDepartment of Otorhinolaryngology, Smell & Taste Clinic, Technische Universität DresdenDepartment of Otorhinolaryngology, Smell & Taste Clinic, Technische Universität DresdenDepartment of Otorhinolaryngology, Smell & Taste Clinic, Technische Universität DresdenAbstract In taste disorders, the key to a correct diagnosis and an adequate treatment is an objective assessment. Compared to psychophysical tests, EEG-derived gustatory event-related potentials (gERP) could be used as a less biased measure. However, the responses identified using conventional time-domain averaging show a low signal-to-noise ratio. This study included 44 patients with dysgeusia and 59 healthy participants, who underwent a comprehensive clinical examination of gustatory function. gERPs were recorded in response to stimulation with two concentrations of salty solutions, which were applied with a high precision gustometer. Group differences were examined using gERP analyzed in the canonical time domain and with Time–Frequency Analyses (TFA). Dysgeusic patients showed significantly lower scores for gustatory chemical and electrical stimuli. gERPs failed to show significant differences in amplitudes or latencies between groups. However, TFA showed that gustatory activations were characterized by a stronger power in controls than in patients in the low frequencies (0.1–4 Hz), and a higher desynchronization in the alpha-band (8–12 Hz). Hence, gERPs reflect the altered taste sensation in patients with dysgeusia. TFA appears to enhance the signal-to-noise ratio commonly present when using conventional time-domain averaging, and might be of assistance for the diagnosis of dysgeusia.https://doi.org/10.1038/s41598-024-52986-5 |
| spellingShingle | Mariano Mastinu Lisa Sophie Grzeschuchna Coralie Mignot Cagdas Guducu Vasyl Bogdanov Thomas Hummel Time–frequency analysis of gustatory event related potentials (gERP) in taste disorders Scientific Reports |
| title | Time–frequency analysis of gustatory event related potentials (gERP) in taste disorders |
| title_full | Time–frequency analysis of gustatory event related potentials (gERP) in taste disorders |
| title_fullStr | Time–frequency analysis of gustatory event related potentials (gERP) in taste disorders |
| title_full_unstemmed | Time–frequency analysis of gustatory event related potentials (gERP) in taste disorders |
| title_short | Time–frequency analysis of gustatory event related potentials (gERP) in taste disorders |
| title_sort | time frequency analysis of gustatory event related potentials gerp in taste disorders |
| url | https://doi.org/10.1038/s41598-024-52986-5 |
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