Numeric aspects in pitch identification: an fMRI study.
Numeric aspects in pitch identification: an fMRI study.
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DOI：
10.1186/1471-2202-12-26
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发表时间：
2011-03-09
期刊：
影响因子：
2.4
通讯作者：
Mathiak K
中科院分区：
文献类型：
--
作者：
Schwenzer M;Mathiak K
与其他听觉技能相比，音调识别产生了独特的反应模式。从众多音高中选择一个将这项任务与检测音高上升区分开来。大量刺激的编码激活了视觉区域的顶内沟。因此，我们假设音调识别过程中的数字编码也会激活顶内沟。为了评估音调识别，参与者必须在每次试验中从一组四个可能的音调中识别出一个音调。功能磁共振成像 (fMRI) 将四音高选择任务中的神经激活与音高轮廓感知、音调定位和音高辨别期间的激活分开。与音调辨别相比，音调识别诱导了顶内沟的双侧激活。音高识别的正确反应与左侧顶内沟的激活相关。由于所呈现的音调范围较大，音高轮廓感知可能激活了颞上回。音高识别和音调定位之间的区分失败。 ACC-海马网络的激活区分了音调辨别和音调识别。音调识别与基于 IPS 激活的音调辨别是有区别的。音调识别期间的 IPS 活动可能是视觉领域中数字编码的听觉对应物。
Pitch identification had yielded unique response patterns compared to other auditory skills. Selecting one out of numerous pitches distinguished this task from detecting a pitch ascent. Encoding of numerous stimuli had activated the intraparietal sulcus in the visual domain. Therefore, we hypothesized that numerosity encoding during pitch identification activates the intraparietal sulcus as well. To assess pitch identification, the participants had to recognize a single pitch from a set of four possible pitches in each trial. Functional magnetic resonance imaging (fMRI) disentangled neural activation during this four-pitch-choice task from activation during pitch contour perception, tone localization, and pitch discrimination. Pitch identification induced bilateral activation in the intraparietal sulcus compared to pitch discrimination. Correct responses in pitch identification correlated with activation in the left intraparietal sulcus. Pitch contour perception activated the superior temporal gyrus conceivably due to the larger range of presented tones. The differentiation between pitch identification and tone localization failed. Activation in an ACC-hippocampus network distinguished pitch discrimination from pitch identification. Pitch identification is distinguishable from pitch discrimination on the base of activation in the IPS. IPS activity during pitch identification may be the auditory counterpart of numerosity encoding in the visual domain.
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影响因子：
5.4
作者：
MACMILLAN, NA;KAPLAN, HL;CREELMAN, CD
通讯作者：
CREELMAN, CD
影响因子：
5.3
作者：
Bermudez, P;Zatorre, RJ
通讯作者：
Zatorre, RJ
影响因子：
4.8
作者：
Dormal, Valerie;Pesenti, Mauro
通讯作者：
Pesenti, Mauro
影响因子：
5.7
作者：
Genovese, CR;Lazar, NA;Nichols, T
通讯作者：
Nichols, T
DOI：
10.1196/annals.1284.004
发表时间：
2003-01-01
期刊：
NEUROSCIENCES AND MUSIC
影响因子：
--
作者：
Griffiths, TD
通讯作者：
Griffiths, TD