Repetitive Exposure to Orofacial Somatosensory Inputs in Speech Perceptual Training Modulates Vowel Categorization in Speech Perception.
Repetitive Exposure to Orofacial Somatosensory Inputs in Speech Perceptual Training Modulates Vowel Categorization in Speech Perception.
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DOI：
10.3389/fpsyg.2022.839087
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发表时间：
2022
影响因子：
3.8
通讯作者：
Ogane, Rintaro
中科院分区：
文献类型：
--
作者：
Ito, Takayuki;Ogane, Rintaro
关键词：
口面躯体感觉输入可能在言语感知和产生之间的联系中发挥作用。考虑到言语运动学习（涉及成对的听觉和体感输入）导致言语感知表征的变化，体感输入也可能参与言语感知的学习或适应过程。在这里，我们表明，重复配对的体感输入和声音，如发生在语音生产和运动学习，也可以引起言语知觉的变化。我们研究了是否/ε/和/a/之间的类别边界改变的知觉训练与口面体感输入的结果。实验分为三个阶段：基线、训练和后效。在所有阶段中，元音识别测试用于识别/ε/和/a/之间的感知边界。在基线和后效阶段，应用基于最大似然程序的自适应方法，使用少量试验检测类别边界。在训练阶段，我们使用恒定刺激的方法，以使参与者暴露于均匀覆盖/ε/和/a/之间范围的刺激变量。在这个阶段，为了模仿伴随实验组的语音产生和学习的感觉输入，当刺激声音出现时，体感刺激被施加在向上的方向上。对照组（CTL）在没有体感刺激的情况下遵循相同的训练程序。当我们比较配对的认知-体感训练前后的类别边界时，实验组参与者的边界可靠地朝着/ε/的方向变化，这表明参与者感知到的/a/比/ε/更多。相比之下，CTL没有显示任何变化。虽然测试的参与者数量有限，但感知转变减少，1周后几乎消失。我们的数据表明，重复暴露的体感输入在一个任务，模拟的感觉配对，发生在言语产生，改变知觉系统，并支持的想法，体感输入在言语知觉适应中发挥作用，可能有助于形成的声音表征的言语知觉。
Orofacial somatosensory inputs may play a role in the link between speech perception and production. Given the fact that speech motor learning, which involves paired auditory and somatosensory inputs, results in changes to speech perceptual representations, somatosensory inputs may also be involved in learning or adaptive processes of speech perception. Here we show that repetitive pairing of somatosensory inputs and sounds, such as occurs during speech production and motor learning, can also induce a change of speech perception. We examined whether the category boundary between /ε/ and /a/ was changed as a result of perceptual training with orofacial somatosensory inputs. The experiment consisted of three phases: Baseline, Training, and Aftereffect. In all phases, a vowel identification test was used to identify the perceptual boundary between /ε/ and /a/. In the Baseline and the Aftereffect phase, an adaptive method based on the maximum-likelihood procedure was applied to detect the category boundary using a small number of trials. In the Training phase, we used the method of constant stimuli in order to expose participants to stimulus variants which covered the range between /ε/ and /a/ evenly. In this phase, to mimic the sensory input that accompanies speech production and learning in an experimental group, somatosensory stimulation was applied in the upward direction when the stimulus sound was presented. A control group (CTL) followed the same training procedure in the absence of somatosensory stimulation. When we compared category boundaries prior to and following paired auditory-somatosensory training, the boundary for participants in the experimental group reliably changed in the direction of /ε/, indicating that the participants perceived /a/ more than /ε/ as a consequence of training. In contrast, the CTL did not show any change. Although a limited number of participants were tested, the perceptual shift was reduced and almost eliminated 1 week later. Our data suggest that repetitive exposure of somatosensory inputs in a task that simulates the sensory pairing which occurs during speech production, changes perceptual system and supports the idea that somatosensory inputs play a role in speech perceptual adaptation, probably contributing to the formation of sound representations for speech perception.
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影响因子：
2.5
作者：
Baart, Martijn;Vroomen, Jean
通讯作者：
Vroomen, Jean
影响因子：
5.4
作者：
LIBERMAN, AM;COOPER, FS;STUDDERT.M
通讯作者：
STUDDERT.M
影响因子：
2.5
作者：
Ito, Takayuki;Ostry, David J.
通讯作者：
Ostry, David J.
DOI：
10.1073/pnas.0907032106
发表时间：
2009-12-01
影响因子：
11.1
作者：
Nasir, Sazzad M.;Ostry, David J.
通讯作者：
Ostry, David J.
影响因子：
3.8
作者：
Ito T;Gracco VL;Ostry DJ
通讯作者：
Ostry DJ