Selective auditory attention modulates cortical responses to sound location change for speech in quiet and in babble.
Selective auditory attention modulates cortical responses to sound location change for speech in quiet and in babble.
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DOI：
10.1371/journal.pone.0268932
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发表时间：
2023
期刊：
影响因子：
3.7
通讯作者：
中科院分区：
文献类型：
--
作者：
听者利用连贯声音线索的空间位置或空间位置的变化来帮助听觉对象的形成。从使用脑电图（EEG）的正常听力听者的刺激诱发的开始反应中，我们之前已经显示了可测量的调谐，以刺激在安静中改变位置，揭示了听觉场景分析的皮层表征的潜在窗口。这些早期的研究使用了非波动的、频谱狭窄的刺激，所以以前的观察结果是否会转化为语言刺激，以及在背景掩蔽物存在的情况下是否会保留对刺激的反应，仍然是未知的。为了研究选择性听觉注意和干扰对目标形成的影响，我们测量了被动和主动条件下，在有和没有背景牙牙学语（+6 dB信噪比）的自由场中，大脑皮层对语音变化位置的反应。主动条件要求听者在语音流出现在一个新位置时做出反应，明确地对刺激是否出现在中线左或右30度的特定区域表示“是”或“否”。总的来说，结果显示，在安静的背景下，与在牙牙学语的背景下相比，对语言刺激的反应相似。然而，当考虑到位置变化的幅度和方向以及受试者参加的地方时，两种背景环境的影响有所不同。在安静的情况下，当语言向右移动时，注意右半脑似乎比注意左半脑更能引起反应。在牙牙学语的情况下没有发现这种差异。因此，与鸡尾酒会听力相关的挑战一致，定向空间注意力可能会在刺激噪音的存在下受到损害，并可能导致听觉流中空间线索的使用较差。
Listeners use the spatial location or change in spatial location of coherent acoustic cues to aid in auditory object formation. From stimulus-evoked onset responses in normal-hearing listeners using electroencephalography (EEG), we have previously shown measurable tuning to stimuli changing location in quiet, revealing a potential window into the cortical representations of auditory scene analysis. These earlier studies used non-fluctuating, spectrally narrow stimuli, so it was still unknown whether previous observations would translate to speech stimuli, and whether responses would be preserved for stimuli in the presence of background maskers. To examine the effects that selective auditory attention and interferers have on object formation, we measured cortical responses to speech changing location in the free field with and without background babble (+6 dB SNR) during both passive and active conditions. Active conditions required listeners to respond to the onset of the speech stream when it occurred at a new location, explicitly indicating ‘yes’ or ‘no’ to whether the stimulus occurred at a block-specific location either 30 degrees to the left or right of midline. In the aggregate, results show similar evoked responses to speech stimuli changing location in quiet compared to babble background. However, the effect of the two background environments diverges somewhat when considering the magnitude and direction of the location change and where the subject was attending. In quiet, attention to the right hemifield appeared to evoke a stronger response than attention to the left hemifield when speech shifted in the rightward direction. No such difference was found in babble conditions. Therefore, consistent with challenges associated with cocktail party listening, directed spatial attention could be compromised in the presence of stimulus noise and likely leads to poorer use of spatial cues in auditory streaming.
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影响因子：
2.4
作者：
CHERRY, EC
通讯作者：
CHERRY, EC
DOI：
10.1016/0013-4694(90)90110-6
发表时间：
1990-04-01
期刊：
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
影响因子：
--
作者：
ALTMAN, JA;VAITULEVICH, SF
通讯作者：
VAITULEVICH, SF
影响因子：
2.8
作者：
Eddins AC;Ozmeral EJ;Eddins DA
通讯作者：
Eddins DA
DOI：
10.1007/s10162-013-0415-y
发表时间：
2013-12-01
影响因子：
2.4
作者：
Billings, Curtis J.;McMillan, Garnett P.;Gille, Sun Mi
通讯作者：
Gille, Sun Mi
DOI：
10.1098/rstb.1998.0281
发表时间：
1998-08-29
期刊：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
Hillyard, SA;Vogel, EK;Luck, SJ
通讯作者：
Luck, SJ