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Comparisons of temporal frequency limits for cross-attribute binding tasks in vision and audition

机译：视觉和听觉中跨属性绑定任务的时间频率限制的比较

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The speed of temporal binding of sensory signals, processed in parallel, can be psychophysically estimated from a critical temporal frequency beyond which observers cannot discriminate the phase relationship between two oscillating stimulus sequences. Fujisaki and Nishida (2010) showed that the temporal limit for visual cross-attribute binding tasks, as well as cross-modal binding tasks,z88;is about 2.5 Hz regardless of attribute combination. Last year, we examined the temporal limits of two auditory cross-attribute binding tasks, and found that the limit of one condition was significantly higher than 2.5 Hz (Kanaya et al., 2012, VSS). However, this experiment did not completely exclude sensory cues produced by peripheral interactions of two auditory sequences. The present study therefore measured the temporal binding limits within and across three auditory attributes (frequency (FREQ)z88;and amplitude (AMP) of a pure tone, and fundamental frequency (F0) of a band-limited pulse train) using stimulus parameters carefully selected to eliminate signal interactions within peripheral channels. The same participants also performed a visual binding task (color-orientation). Results showed that the temporal limits for auditory within-attribute binding tasks were 3.9 (FREQ-FREQ), 5.4 (AMP-AMP) and 3.4 Hz (F0-F0). The limits for auditory cross-attribute binding tasks were 4.0 (FREQ-AMP), 3.6 (FREQ-F0) and 3.3 Hz (AMP-F0), whereas the limit of the visual cross-attribute binding task remained close to 2.5 Hz. Therefore, even under conditions excluding peripheral interactions, the temporal limit obtained with auditory cross-attribute binding tasks can be higher than that of vision. Our findings are consistent with the hypothesis that, while cross-modal and visual cross-attribute binding tasks reflect a high-level attribute-independent binding mechanism, auditory cross-attribute binding tasks, at least those we have tested, can also reflect sensory processing stages earlier than the high-level binding mechanism because neural processing for different auditory attributes is not segregated as clearly as that for different visual attributes.
机译：可以从一个关键的时间频率从心理上估算并行处理的感觉信号的时间绑定速度，在该频率范围内观察者无法辨别两个振荡刺激序列之间的相位关系。 Fujisaki和Nishida（2010）指出，视觉交叉属性绑定任务以及跨模式绑定任务z88的时间限制约为2.5 Hz，与属性组合无关。去年，我们检查了两个听觉交叉属性绑定任务的时间限制，发现一种情况的限制显着高于2.5 Hz（Kanaya等人，2012，VSS）。然而，该实验并未完全排除由两个听觉序列的外周相互作用产生的感觉提示。因此，本研究使用刺激参数仔细测量了三个听觉属性（三个听觉属性（频率（FREQ）z88;纯音的幅度（AMP），以及一个带限脉冲序列的基本频率（F0）））之内和之间的时间限制。选择以消除外围通道内的信号交互。相同的参与者还执行了视觉绑定任务（颜色定向）。结果表明，听觉属性内绑定任务的时间限制为3.9（FREQ-FREQ），5.4（AMP-AMP）和3.4 Hz（F0-F0）。听觉交叉属性绑定任务的限制为4.0（FREQ-AMP），3.6（FREQ-F0）和3.3 Hz（AMP-F0），而视觉交叉属性绑定任务的限制仍然接近2.5 Hz。因此，即使在排除外围交互作用的条件下，通过听觉交叉属性绑定任务获得的时间限制也可能高于视觉。我们的发现与以下假设相符，即跨模态和视觉交叉属性绑定任务反映了高级的属性独立绑定机制，而听觉交叉属性绑定任务（至少是我们已经测试的）也可以反映感觉处理。阶段比高级绑定机制更早，因为针对不同听觉属性的神经处理不如针对不同视觉属性的神经处理清晰地分离。

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