Harris D, Fucci D, Petrosino L, Belch M
Healthcare Rehabilitation Center, Austin, Texas 78745.
Percept Mot Skills. 1992 Apr;74(2):619-26. doi: 10.2466/pms.1992.74.2.619.
The purpose of the present experiment was to determine the extent of hearing threshold shift that may occur during an auditory magnitude-estimation task involving stimulus intensities as great as 80 dB sensation level. Also, possible influences of hearing threshold shift on numerical magnitude-estimation responses and magnitude-function slopes were investigated. Results indicated that hearing threshold shift was insignificant (1-2 dB). Consistent small increases in numerical magnitude responses were observed on a magnitude-estimation task where hearing thresholds were retested between stimulus presentations versus a magnitude-estimation task where hearing thresholds were not retested. The stability of auditory magnitude functions across different conditions in the current investigation was in agreement with vibrotactile magnitude-scaling behavior observed by Fucci, et al. in 1989 and 1991. The over-all results supported the concept of an absolute, internal sensory-scaling mechanism being operable during magnitude estimation of auditory stimuli as discussed by Zwislocki and Goodman in 1980.
本实验的目的是确定在涉及高达80分贝感觉级别的刺激强度的听觉量值估计任务中可能发生的听力阈值变化程度。此外，还研究了听力阈值变化对数字量值估计反应和量值函数斜率的可能影响。结果表明，听力阈值变化不显著（1-2分贝）。在刺激呈现之间重新测试听力阈值的量值估计任务与未重新测试听力阈值的量值估计任务相比，观察到数字量值反应持续出现小幅增加。当前研究中不同条件下听觉量值函数的稳定性与Fucci等人在1989年和1991年观察到的振动触觉量值缩放行为一致。总体结果支持了Zwislocki和Goodman在1980年所讨论的在听觉刺激量值估计过程中存在一种绝对的、内部感觉缩放机制可操作的概念。
