Hemispheric Differences in the Recognition of Environmental Sounds
Hemispheric Differences in the Recognition of Environmental Sounds
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DOI：
10.1111/j.1467-9280.2009.02379.x
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发表时间：
2009-07-01
影响因子：
8.2
通讯作者：
McLennan, Conor T.
中科院分区：
文献类型：
--
作者：
Gonzalez, Julio;McLennan, Conor T.
最近的工作已经发现支持两个可分离的和平行的神经子系统的基础对象和形状识别在视觉领域：抽象类别子系统，更有效地在左大脑半球比在右，和一个具体的范例子系统，更有效地在右半球比在左半球。这种不对称性的证据已被观察到的语言刺激（词，pseudoword形式）和非语言刺激（对象）。在听觉领域，我们以前发现半球的不对称性启动效应使用语言刺激（口语）。在本研究中，我们进行了四个长期的重复启动实验，以调查是否会观察到这样的半球不对称性的非语言听觉刺激（环境声音），以及。研究结果支持可分离子系统理论。当声音被呈现给左耳（右半球）时，获得了特异性效应，但当声音被呈现给右耳（左半球）时则没有。理论影响进行了讨论。
Recent work has found support for two dissociable and parallel neural subsystems underlying object and shape recognition in the visual domain: an abstract-category subsystem that operates more effectively in the left cerebral hemisphere than in the right, and a specific-exemplar subsystem that operates more effectively in the right hemisphere than in the left. Evidence of this asymmetry has been observed for linguistic stimuli (words, pseudoword forms) and nonlinguistic stimuli (objects). In the auditory domain, we previously found hemispheric asymmetries in priming effects using linguistic stimuli (spoken words). In the present study, we conducted four long-term repetition-priming experiments to investigate whether such hemispheric asymmetries would be observed for nonlinguistic auditory stimuli (environmental sounds) as well. The results support the dissociable-subsystems theory. Specificity effects were obtained when sounds were presented to the left ear (right hemisphere), but not when sounds were presented to the right ear (left hemisphere). Theoretical implications are discussed.