EVANS D R, MELLON D
J Gen Physiol. 1962 Jan;45(3):487-500. doi: 10.1085/jgp.45.3.487.
Electrophysiological evidence is given that water is the specific stimulus for a fourth sensory cell associated with the taste sensilla of the blowfly. Water elicited impulses from a single cell which responded in two distinct phases: an initial rapid rate of discharge followed by a lesser, sustained steady rate. The latter, in the case of sucrose solutions, was inhibited in direct proportion to the log of the osmotic pressure over a 10(4) range of pressures. Other non-electrolytes inhibited, but the effect could not be simply correlated with parameters of the solutions. Electrolytes inhibited the water response more sharply and at lower concentrations. The inhibition in all cases was not dependent on impulses in the other sensory cells of the taste sensillum.
有证据表明，水是与家蝇味觉感受器相关的第四种感觉细胞的特定刺激物。水可引发单个细胞产生冲动，该细胞的反应分为两个不同阶段：最初放电速率较快，随后是较低的持续稳定速率。在蔗糖溶液的情况下，后者与10⁴压力范围内渗透压的对数成正比受到抑制。其他非电解质也有抑制作用，但这种效应不能简单地与溶液参数相关联。电解质在更低浓度时就能更显著地抑制水反应。在所有情况下，这种抑制并不依赖于味觉感受器中其他感觉细胞的冲动。
