Interaction of streaming and attention in human auditory cortex.
Interaction of streaming and attention in human auditory cortex.
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DOI：
10.1371/journal.pone.0118962
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Dykstra AR
中科院分区：
文献类型：
--
作者：
Gutschalk A;Rupp A;Dykstra AR
连续呈现的音调有时被分成两个感知上不同的流。一个正在进行的辩论是，这种基本的流现象是否反映了自动过程或需要注意力集中的刺激。在这里，我们研究了集中注意力的影响流相关的活动在人类听觉皮层使用脑磁图（MEG）。听力被试呈现两耳分听范式，其中左耳刺激由典型的流刺激（阿坝_或ABAA）组成，右耳刺激由经典的oddball范式组成。在第一阶段，听众被指示参加右耳古怪序列，并发现罕见的偏差。在第二阶段，他们被指示参加左耳流刺激，并报告他们是否听到一个或两个流。序列的频率差（ΔF）被设置为使得最小和最大ΔF条件通常分别引起单流和双流感知。选择两个中间ΔF条件来引发感知（即，一个或两个流）。注意力增强了P1-N1复合波的峰-峰幅度，但仅限于模糊的ΔF条件，这与流的自动机制与注意力密切相互作用的概念一致，后者对模糊的声音序列特别重要。
Serially presented tones are sometimes segregated into two perceptually distinct streams. An ongoing debate is whether this basic streaming phenomenon reflects automatic processes or requires attention focused to the stimuli. Here, we examined the influence of focused attention on streaming-related activity in human auditory cortex using magnetoencephalography (MEG). Listeners were presented with a dichotic paradigm in which left-ear stimuli consisted of canonical streaming stimuli (ABA_ or ABAA) and right-ear stimuli consisted of a classical oddball paradigm. In phase one, listeners were instructed to attend the right-ear oddball sequence and detect rare deviants. In phase two, they were instructed to attend the left ear streaming stimulus and report whether they heard one or two streams. The frequency difference (ΔF) of the sequences was set such that the smallest and largest ΔF conditions generally induced one- and two-stream percepts, respectively. Two intermediate ΔF conditions were chosen to elicit bistable percepts (i.e., either one or two streams). Attention enhanced the peak-to-peak amplitude of the P1-N1 complex, but only for ambiguous ΔF conditions, consistent with the notion that automatic mechanisms for streaming tightly interact with attention and that the latter is of particular importance for ambiguous sound sequences.
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DOI：
10.1037/0096-1523.11.3.257
发表时间：
1985-01-01
影响因子：
2.1
作者：
ANSTIS, S;SAIDA, S
通讯作者：
SAIDA, S
影响因子：
3.4
作者：
Gutschalk, A;Patterson, RD;Rupp, A
通讯作者：
Rupp, A
影响因子：
2.4
作者：
MILLER, GA;HEISE, GA
通讯作者：
HEISE, GA
影响因子：
1.7
作者：
Carlyon, RP;Plack, CJ;Cusack, R
通讯作者：
Cusack, R
影响因子：
2
作者：
Carl, David;Gutschalk, Alexander
通讯作者：
Gutschalk, Alexander