Abstract：
:is well established that, on the anterior tongue, thresholds for chemical tastants are inversely related to the number of fungiform papillae. However, it is not known whether this is the case for thresholds to electrical currents presented to the lingual surface. In this study, electrical thresholds for 16 subjects were determined at four left-side anterior lingual locations: tongue tip (TT), a region 1.7 cm posterior to the tip, a region 3.4 cm posterior to the TT, and a region 1.7 cm from the tip along the lateral margin. Two electrode sizes were employed (12.5 and 50 mm2), and stimulus duration was held constant at 0.5 s. The number of fungiform papillae was determined using videomicroscopy. Analogous to what is seen with chemical stimulation, an inverse relationship was present between the mean electrical thresholds, expressed in terms of current density, and the number of papillae within the stimulated regions. The TT --which has the highest density of fungiform papillae -- was found to be more sensitive than the other tongue regions evaluated. Also paralleling chemical thresholds, the mean electrical threshold values were lower (i.e., sensitivity was higher) at a given tongue locus for the 50-mm2 than for the 12.5-mm2 stimulus area. Overall, this study demonstrates that thresholds for electrical stimulation vary across discrete regions of the anterior tongue and are specifically related to the number of fungiform papillae within the stimulated regions. These observations provide additional support for the hypothesis that lingual sensations induced by low levels of electrical current are mediated by the taste system.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Miller SL,Mirza N,Doty RLdoi
10.1016/s0031-9384(02)00672-8subject
Has Abstractpub_date
2002-04-15 00:00:00pages
753-7issue
5eissn
0031-9384issn
1873-507Xpii
S0031938402006728journal_volume
75pub_type
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：1985-06-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章,meta分析
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更新日期：2019-05-15 00:00:00
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更新日期：2016-03-15 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(93)90010-d
更新日期：1993-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章,评审
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更新日期：2008-01-28 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(93)90150-e
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更新日期：1990-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90370-2
更新日期：1987-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：1996-08-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：1993-02-01 00:00:00
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更新日期：1984-03-01 00:00:00
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pub_type： 杂志文章
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更新日期：1994-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章,评审
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更新日期：2006-08-30 00:00:00
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pub_type： 临床试验,杂志文章
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更新日期：2006-07-30 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2011.05.018
更新日期：2011-10-24 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章,评审
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更新日期：1987-01-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.physbeh.2007.04.018
更新日期：2007-10-22 00:00:00
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更新日期：2014-09-01 00:00:00
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更新日期：2007-08-15 00:00:00
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更新日期：2019-10-15 00:00:00
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journal_title：Physiology & behavior
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更新日期：1994-11-01 00:00:00
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更新日期：1995-07-01 00:00:00
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更新日期：2012-02-01 00:00:00
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更新日期：2019-04-01 00:00:00
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pub_type： 杂志文章
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更新日期：2001-07-01 00:00:00
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pub_type： 杂志文章
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更新日期：1995-09-01 00:00:00
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pub_type： 杂志文章
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更新日期：1986-01-01 00:00:00
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