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The left dorsal stream causally mediates the tone labeling in absolute pitch
Annals of the New York Academy of Sciences ( IF 4.1 ) Pub Date : 2021-05-27 , DOI: 10.1111/nyas.14616 Lars Rogenmoser 1 , Andra Arnicane 2 , Lutz Jäncke 2, 3 , Stefan Elmer 2
Annals of the New York Academy of Sciences ( IF 4.1 ) Pub Date : 2021-05-27 , DOI: 10.1111/nyas.14616 Lars Rogenmoser 1 , Andra Arnicane 2 , Lutz Jäncke 2, 3 , Stefan Elmer 2
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Absolute pitch (AP) refers to the ability to effortlessly identify given pitches without any reference. Correlative evidence suggests that the left posterior dorsolateral prefrontal cortex (DLPFC) is responsible for the process underlying pitch labeling in AP. Here, we measured the sight-reading performance of right-handed AP possessors and matched controls under cathodal and sham transcranial direct current stimulation of the left DLPFC. The participants were instructed to report notations as accurately and as fast as possible by playing with their right hand on a piano. The notations were simultaneously presented with distracting auditory stimuli that either matched or mismatched them in different semitone degrees. Unlike the controls, AP possessors revealed an interference effect in that they responded slower in mismatching conditions than in the matching one. Under cathodal stimulation, this interference effect disappeared. These findings confirm that the pitch-labeling process underlying AP occurs automatically and is largely nonsuppressible when triggered by tone exposure. The improvement of the AP possessors’ sight-reading performances in response to the suppression of the left DLPFC using cathodal stimulation confirms a causal relationship between this brain structure and pitch labeling.
中文翻译：
左背侧流在绝对音高中因果地介导音调标记
绝对音高 (AP) 是指无需任何参考即可轻松识别给定音高的能力。相关证据表明左后背外侧前额叶皮层 (DLPFC) 负责 AP 中音高标记的过程。在这里，我们测量了右手 AP 拥有者和匹配控件在左侧 DLPFC 的阴极和假经颅直流电刺激下的视读性能。参与者被要求通过用右手在钢琴上弹奏来尽可能准确和快速地报告符号。这些符号同时呈现出令人分心的听觉刺激，这些刺激在不同的半音度上与它们匹配或不匹配。与控件不同的是，AP 拥有者显示出一种干扰效应，因为他们在不匹配条件下的响应比在匹配条件下慢。在阴极刺激下，这种干扰效应消失了。这些发现证实了 AP 基础上的音调标记过程会自动发生，并且在由音调暴露触发时在很大程度上是不可抑制的。使用阴极刺激抑制左侧 DLPFC 后，AP 拥有者的视奏能力得到改善，这证实了这种大脑结构与音高标记之间的因果关系。
更新日期：2021-05-27
中文翻译：
左背侧流在绝对音高中因果地介导音调标记
绝对音高 (AP) 是指无需任何参考即可轻松识别给定音高的能力。相关证据表明左后背外侧前额叶皮层 (DLPFC) 负责 AP 中音高标记的过程。在这里，我们测量了右手 AP 拥有者和匹配控件在左侧 DLPFC 的阴极和假经颅直流电刺激下的视读性能。参与者被要求通过用右手在钢琴上弹奏来尽可能准确和快速地报告符号。这些符号同时呈现出令人分心的听觉刺激，这些刺激在不同的半音度上与它们匹配或不匹配。与控件不同的是，AP 拥有者显示出一种干扰效应，因为他们在不匹配条件下的响应比在匹配条件下慢。在阴极刺激下，这种干扰效应消失了。这些发现证实了 AP 基础上的音调标记过程会自动发生，并且在由音调暴露触发时在很大程度上是不可抑制的。使用阴极刺激抑制左侧 DLPFC 后，AP 拥有者的视奏能力得到改善，这证实了这种大脑结构与音高标记之间的因果关系。
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