Dunn B E, Grauer R A
J Aud Res. 1981 Oct;21(3):187-93.
Young adults (2 F, 1 M) in a sound room tracked fixed-frequency Bekesy threshold in the L ear to a 3-kc/s tone for 4 min before, and for 4 min after, receiving in the R ear either a 13-min fatiguing .5-kc/s tone at 75 db SPL, or 13 min silence. Half the time S, when receiving the fatiguing tone, read a magazine, and half the time attention was directed to the R ear. In the control condition with no fatiguing tone, S read half the time and half the time counted soft tone pips in the R ear. Only when S's attention was directed to the fatiguing tone did threshold rise. In other cases, threshold dropped. Results are discussed in terms of central-attentional variables and recovery from fatigue.
在隔音室内，让年轻成年人（2名女性，1名男性）在右耳接受以下两种处理之前和之后，对左耳3千赫兹纯音的固定频率贝凯西听阈进行4分钟的跟踪：一是在75分贝声压级下接受13分钟、频率为0.5千赫兹的疲劳性纯音刺激，二是保持13分钟安静。在接受疲劳性纯音刺激时，一半时间（S）阅读杂志，另一半时间将注意力集中在右耳。在无疲劳性纯音的对照条件下，S一半时间阅读，另一半时间数右耳的轻柔纯音短声。只有当S将注意力集中在疲劳性纯音上时，听阈才会升高。在其他情况下，听阈会下降。从中枢注意力变量和疲劳恢复的角度对结果进行了讨论。
