Schiffman S S, Clark T B
Neurobiol Aging. 1980 Summer;1(1):81-91. doi: 10.1016/0197-4580(80)90028-7.
Serial dilutions of twenty-three amino acids were presented to young and elderly subjects who rated the relative intensities of the dilutions using the magnitude estimation procedure. In each case the slope of the psychophysical function relating concentration and perceived intensity was flatter for the elderly subjects: the mean ratio (slope (young)/slope (elderly)) was 2.55. This result could be due to an age-related decline in gustatory apparatus or associated central areas as well as memory loss and decline in performance often found in the elderly. No conclusive relationships between the slopes of the psychophysical functions were found with chemical structure, taste quality, or solubility.
向年轻和老年受试者提供了二十三种氨基酸的系列稀释液，这些受试者使用数量估计程序对稀释液的相对强度进行评分。在每种情况下，老年受试者中浓度与感知强度相关的心理物理函数的斜率都更平缓：平均比率（斜率（年轻）/斜率（老年））为2.55。这一结果可能是由于味觉器官或相关中枢区域与年龄相关的衰退，以及老年人中常见的记忆力丧失和表现下降。心理物理函数的斜率与化学结构、味觉质量或溶解度之间未发现确凿的关系。
