Smell and taste of chewing gum affect frequency domain EEG source localizations

Yagyu, T.; Kondakor, I.; Kochi, K.; Koenig, T.; Lehmann, D.; Kinoshita, T.; Hirota, T.; Yagyu, T. (1998). Smell and taste of chewing gum affect frequency domain EEG source localizations. International journal of neuroscience, 93(3-4), pp. 205-216. Informa Healthcare 10.3109/00207459808986426

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We investigated brain electric field signatures of subjective feelings after chewing regular gum or gum base without flavor. 19-channel eyes-closed EEG from 20 healthy males before and after 5 minutes of chewing the two gum types in random sequence was source modeled in the frequency domain using the FFT-Dipole-Approximation. 3-dimensional brain locations and strengths (Global Field Power, GFP) of the equivalent sources of five frequency bands were computed as changes from pre-chewing baseline. Gum types differed (ANOVA) in pre-post changes of source locations for the alpha-2 band (to anterior and right after regular gum, opposite after gum base) and beta-2 band (to anterior and inferior after regular gum, opposite after gum base), and of GFP for delta-theta, alpha-2 and beta-1 (regular gum: increase, gum base: decrease). Subjective feeling changed to more positive values after regular gum than gum base (ANOVA).—Thus, chewing gum with and without taste-smell activates different brain neuronal populations.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > Psychiatric Neurophysiology [discontinued]

UniBE Contributor:

König, Thomas


600 Technology > 610 Medicine & health




Informa Healthcare




Thomas König

Date Deposited:

25 Aug 2014 10:46

Last Modified:

05 Dec 2022 14:27

Publisher DOI:


PubMed ID:


Uncontrolled Keywords:

Multichannel EEG, FFT-Dipole-Approximation, chewing gum, subjective feeling, smell and taste, frequency domain source modeling


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