کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
930249 1474415 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chemosensory event-related brain potentials (CSERP) after strictly monorhinal stimulation
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
Chemosensory event-related brain potentials (CSERP) after strictly monorhinal stimulation
چکیده انگلیسی


• Strictly monorhinal stimulation with closed contralateral nostril generates CSERP.
• Escaping ipsilateral air does not disturb the rectangular shape of the stimuli.
• Parameters of CSREP with open or closed contralateral nostril were not different.
• Latencies and amplitudes were independent of the stimulated nostril.

Using flow-olfactometer for chemosensory event related brain potentials (CSERP) the air escapes the contralateral nostril from the stimulated nostril via the nasopharynx. Theoretically, the escaping odorous airflow is able to stimulate the contralateral chemosensory receptors and might activate the olfactory or the trigeminal brain processes. Testing 18 healthy subjects, we were able to show that it was possible to generate CSERP by strictly monorhinal stimulation with closed contralateral nostril. That means that the rectangular shapes of the brief chemosensory stimuli were not disturbed. The latencies of N1 and P2 and the amplitudes (N1P2) of CSERP (stimulants: H2S and CO2) were not different with either open or closed contralateral nostril. The induced CSERP were independent of stimulated nostril side. Additionally we found that with closed contralateral nostril more than 90% of passive monorhinal chemosensory stimuli were perceived. In further imaging studies the presented paradigm should be applied with strictly monorhinal stimulation to investigate the chemosensory processing pathways with high time resolution (EEG/MEG).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Psychophysiology - Volume 93, Issue 3, September 2014, Pages 305–310
نویسندگان
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