Ramirez I
Monell Chemical Senses Center, Philadelphia, Pennsylvania 19104-3308.
Am J Physiol. 1993 Dec;265(6 Pt 2):R1404-9. doi: 10.1152/ajpregu.1993.265.6.R1404.
Two different techniques were used to assess the role of olfaction in the preference rats show for dilute nutrient suspensions and solutions. Removal of the olfactory bulbs reduced but did not abolish preference for 1% starch and oil emulsions. Removal of the olfactory bulbs also reduced preference for sucrose, Polycose, and saccharin. In another experiment, rats were rendered anosmic with intranasal zinc sulfate. The degree of anosmia was evaluated by measuring preference for an aqueous solution of citral and vanillin. Rats whose avoidance of citral plus vanillin had been abolished by zinc sulfate continued to prefer a 1% starch suspension over vehicle, although starch preference was significantly reduced. It is concluded that starch and oil preference is mediated by both olfactory and nonolfactory cues.
采用两种不同技术来评估嗅觉在大鼠对稀释营养悬浮液和溶液的偏好中所起的作用。切除嗅球会降低但不会消除对1%淀粉和油乳剂的偏好。切除嗅球也会降低对蔗糖、聚葡萄糖和糖精的偏好。在另一项实验中，通过鼻内注射硫酸锌使大鼠嗅觉缺失。通过测量对柠檬醛和香草醛水溶液的偏好来评估嗅觉缺失的程度。因硫酸锌而消除了对柠檬醛加香草醛回避反应的大鼠，尽管对淀粉的偏好显著降低，但仍继续偏好1%淀粉悬浮液而非赋形剂。得出的结论是，对淀粉和油的偏好是由嗅觉和非嗅觉线索共同介导的。
