| Autor: | Kerstin Krauel, Bettina M. Pause, Roman Ferstl, Bernfried Sojka |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
medicine.medical_specialty
Secondary task medicine.diagnostic_test musculoskeletal neural and ocular physiology media_common.quotation_subject Plant Science General Medicine Body odors Biology Audiology Electroencephalography Chemosensory perception Odor Insect Science Perception Genetics medicine Same sex Animal Science and Zoology Oddball paradigm psychological phenomena and processes media_common |
| Zdroj: | Genetica. 104:285-294 |
| ISSN: | 0016-6707 |
| DOI: | 10.1023/a:1026462701154 |
| Popis: | A new method will be presented which allows the perception of body odors in humans to be studied objectively. The analysis of body odor‐evoked potentials was used to investigate if and how the human brain is able to differentiate self from non‐self body odor for the first time. Six subjects (three females) participated in two experimental sessions. In each session, two body odors (axillary hair) were presented within an olfactory oddball paradigm. One of the odors was collected from the subject and the other from an odor donor of the same sex. In the first session the subjects' attention was distracted to a secondary task (passive paradigm), in the second session the subjects were asked to actively differentiate the odors (active paradigm). For the EEG recordings the odors were presented within a constantly flowing airstream. The results show that the subjects could hardly differentiate the body odors subjectively. However, it could be demonstrated that the central nervous processing of one's own odor was faster than the processing of the chemosensory non‐self signal. Moreover, in the active paradigm, the potentials appeared to be larger when the subjects perceived their own body odor. The conclusion is reached that the measurement of chemosensory event‐related potentials (CSERP) is the method of choice for the investigation of HLA‐associated body odors. |
| Databáze: | OpenAIRE |
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