Frequency discrimination in rats measured with tone-step stimuli and discrete pure tones.
Frequency discrimination in rats measured with tone-step stimuli and discrete pure tones.
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DOI：
10.1016/j.heares.2009.02.009
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发表时间：
2009-05
期刊：
影响因子：
2.8
通讯作者：
Rennaker RL 2nd
中科院分区：
文献类型：
--
作者：
Sloan AM;Dodd OT;Rennaker RL 2nd
比较了两种改进的go/no-go任务对白化大鼠频率辨别的测量。第一个任务需要在连续的参考音调中检测瞬时的、相位匹配的频率变化，称为“音调步进”。更传统的第二项任务需要检测重复离散音调的参考序列之间的频率变化。在60 dB声压级下，在2.31至27.7 kHz的参考频率范围内测量每个任务的频率差值，频率向上和向下移动。所有24名受试者都很快学会了“音调-步骤”任务，但只有13名受试者能够学会离散音调任务。受试者在两项任务中的表现都随着参考频率的增加而提高，而且在两项任务中，频率向上变化的阈值显著高于频率向下变化的阈值。“音调-步骤”任务的总体平均韦伯比率为1.73±0.27%，离散音调任务的总体平均韦伯比率为2.76±0.29%。然而，受试者在“音调-步骤”任务中的表现与随后在离散音调任务中的表现不相关。我们认为，任务之间缺乏对应关系可能是由于在离散音调任务的音调间隔期间，频率识别过程与短期记忆痕迹相互作用。
Two modified go/no-go tasks are compared for the measurement of frequency discrimination in albino rats. The first task required detection of an instantaneous, phase-matched frequency change, called a “tone-step,” within a continuous reference tone. The more traditional second task required detection of a frequency change between repetitions of a reference sequence of repeating discrete tones. For each task frequency difference limens were measured over a range of reference frequencies from 2.31 to 27.7 kHz at 60 dB sound pressure level, with both upward and downward frequency shifts. All 24 subjects quickly learned the “tone-step” task to criterion, but only 13 could also learn the discrete tone task. Subjects’ performance at either task generally improved with increasing reference frequency, and in both tasks upward frequency change thresholds were significantly higher than thresholds for downward changes. Overall mean Weber ratios were 1.73±0.27% for the “tone-step” task and 2.76±0.29% for the discrete tone task. However, subjects’ performance on the “tone-step” task was not correlated with subsequent performance on the discrete tone task. We suggest that the lack of correspondence between tasks might be due to frequency discrimination processes interacting with short-term memory traces during inter-tone intervals in the discrete tone task.
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DOI：
10.1037/h0058322
发表时间：
1951-01-01
期刊：
JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY
影响因子：
--
作者：
JAMISON, JH
通讯作者：
JAMISON, JH
影响因子：
2.8
作者：
SINNOTT, JM;BROWN, CH;BROWN, FE
通讯作者：
BROWN, FE
影响因子：
2.4
作者：
SEK, A;MOORE, BCJ
通讯作者：
MOORE, BCJ
影响因子：
--
作者：
HARRIS, JD
通讯作者：
HARRIS, JD
影响因子：
2.8
作者：
BORG, E
通讯作者：
BORG, E