Dynamics of Nasal Irritation from Pulsed Homologous Alcohols
نویسندگان
چکیده
منابع مشابه
Dynamics of nasal irritation from pulsed homologous alcohols.
Relatively, few studies have focused on how nasal irritation changes over time. To simulate the rhythm of natural respiration, subjects received 3-s pulses of volatile organic compounds interspersed with 3-s pulses of clean air. Each trial, subjects received 9 pulses of a chemical vapor over about 1 min. Subjects rated nasal irritation from each pulse using magnitude estimation. Within a trial,...
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Through temporal integration, sensory systems accumulate stimulus energy, e.g., photons, acoustic energy, or molecules, over time to detect weaker signals than they otherwise could. Past studies found imperfect temporal integration in detection of nasal irritation: To maintain a fixed level of detection, one must increase stimulus duration by more than twofold to compensate for cutting concentr...
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کاتالیست یک سنتز جدید برای تیواترها توصیف شده است. واکنش الکل ها با آریل، هتروآریل و آلکیل تیو ل ها درحضور 1،3،5- تری آزو- 2،4،6- تری فسفرین-2،2،4،4،6،6 هگزاکلراید ((tapc به عنوان یک کاتالیست موُثر، بازده های خوب تا عالی از تیواترها را حاصل می کند. علاوه براین، واکنش تحت شرایط بدون فلز و بدون حلال پیش می رود، بنابراین یک مکمل جالب برای روش های شناخته شده سنتز تیواترها ارائه می دهد. یک مکانیسم ا...
15 صفحه اولTime-intensity ratings of nasal irritation from carbon dioxide.
In three experiments, subjects tracked intensity of nasal irritation during sustained presentation of carbon dioxide in the nose. Experiment 1 showed that: (i). functions of peak intensity vs. concentration and latency to first non-zero ratings agreed with published literature, thereby supporting the validity of the technique; (ii). on average, rated intensity peaked approximately 3-4 s after s...
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The response of the blowfly Phormia regina to stimulation by alcohols in the vapor phase has been investigated by means of an olfactometer which permitted quantitative control of stimulus concentration. The median rejection threshold was selected as a criterion of response. As was true in the case of contact chemoreception, the distribution of thresholds in the fly population is normal with res...
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ژورنال
عنوان ژورنال: Chemical Senses
سال: 2010
ISSN: 0379-864X,1464-3553
DOI: 10.1093/chemse/bjq086