Olfactory cross-adaptation and facilitation in human neonates |
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| Authors: | C K Rovee |
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| Affiliation: | 1. Laboratory of Image Science and Technology, Southeast University, Nanjing, China;2. Centre de Recherche en Information Biomedicale Sino-Francais (LIA CRIBs), Rennes, France;3. College of Information Engineering, Capital Normal University, Beijing, China;4. Biomedical Image Analysis Group, Department of Computing, Imperial College London, London, UK;1. TNlist and Department of Automation, Tsinghua University, Beijing, China;2. Centre for Signal Processing, Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong;1. Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 14220 Prague 4, Czech Republic;2. Principles of Informatics Research Division, National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo, Japan;3. Department of Informatics, Graduate University for Advanced Studies (Sokendai), 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo, Japan |
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| Abstract: | Forty human neonates were tested in a 5-trial cross-adaptation procedure with one of two pairs of olfactory stimuli from the homologous series of aliphatic alcohols. Members within each pair were matched for subjective intensity but differed in carbon chain length and concentration. Data were plotted as average millimeter intergrator summation of stabilimeter activity over trials. Response latencies were also determined. Selective adaptation was found to occur between 25% propanol and 100% hexanol, the latter adapting more rapidly. Response to 25% hexanol was enhanced by a preceding 100% octanol stimulus, although reversing the adapting stimulus did not produce the same effect. Results were interpreted in terms of the physicochemical properties of the odorants and resulting areal and temporal differentiation and summation along the olfactory surface. |
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