Multisensory perceptual interactions between higher-order temporal frequency signals.
Multisensory perceptual interactions between higher-order temporal frequency signals.
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高阶时间频率信号之间的多感觉感知相互作用。
DOI：
10.1037/xge0000513
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发表时间：
2019-07
期刊：
影响因子：
--
通讯作者：
Yau JM
中科院分区：
文献类型：
--
作者：
Crommett LE;Madala D;Yau JM
听觉和触觉中自然产生的信号可能是复杂的，并以频率和幅度的时间变化为标志。听觉扫频处理已被广泛研究；然而，对触摸中的扫频处理知之甚少，因为研究主要集中在对简单正弦振动的感知上。鉴于在纯音信号的频率处理中，听觉和触觉之间存在广泛的相互作用，我们推测，这些感觉在处理高阶频率表征(如扫频)时也可能相互作用。在一系列心理物理实验中，我们描述了听觉干扰物对参与者辨别触觉频率扫描能力的影响。听觉频率扫描系统性地偏向于对扫描方向的触觉感知。重要的是，当声音和振动占据不同的绝对频率范围或声音由强度扫描组成时，听觉线索对触觉扫描方向知觉的影响很小。因此，听觉和触觉以特定于频率和特征的方式在扫频感知中相互作用。我们的结果表明，音频-触觉的相互作用并不局限于处理简单的正弦信号。由于高阶频率表征可以由简单表征综合而来，我们的研究结果表明，时间频域中的多感觉交互作用跨越了感觉加工中的多个层级。
Naturally occurring signals in audition and touch can be complex and marked by temporal variations in frequency and amplitude. Auditory frequency sweep processing has been studied extensively; however, much less is known about sweep processing in touch since studies have primarily focused on the perception of simple sinusoidal vibrations. Given the extensive interactions between audition and touch in the frequency processing of pure tone signals, we reasoned that these senses might also interact in the processing of higher-order frequency representations like sweeps. In a series of psychophysical experiments, we characterized the influence of auditory distractors on the ability of participants to discriminate tactile frequency sweeps. Auditory frequency sweeps systematically biased the tactile perception of sweep direction. Importantly, auditory cues exerted little influence on tactile sweep direction perception when the sounds and vibrations occupied different absolute frequency ranges or when the sounds consisted of intensity sweeps. Thus, audition and touch interact in frequency sweep perception in a frequency- and feature-specific manner. Our results demonstrate that audio-tactile interactions are not constrained to the processing of simple sinusoids. Because higher-order frequency representations may be synthesized from simpler representations, our findings imply that multisensory interactions in the temporal frequency domain span multiple hierarchical levels in sensory processing.
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