Exploring laterality and memory effects in the haptic discrimination of verbal and non-verbal shapes
Exploring laterality and memory effects in the haptic discrimination of verbal and non-verbal shapes
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探索言语和非言语形状触觉辨别中的偏侧性和记忆效应
DOI：
10.1080/1357650x.2018.1450881
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
K. Tiippana
中科院分区：
文献类型：
--
作者：
P. Stoycheva;K. Tiippana
大脑左半球在处理语言信息时往往表现出优势，而右半球则倾向于处理非语言信息。在触觉领域，由于对侧神经支配，这种功能性偏侧化反映在某些功能期间的手部优势中。然而，关于触觉信息的手半球优势的研究结果仍然是矛盾的。本研究讨论了这些偏侧效应及其与触觉方式中记忆保持时间的相互作用。被试分别用左手和右手在5、15和30 s的记忆保持时间内对字母、几何形状和无意义形状进行触觉辨别，并测量辨别指数d′。 字母和几何形状的d′值显著高于无意义形状。这可能是由于双重编码（命名+空间）或/和低刺激复杂性。没有刺激特异性偏侧效应。然而，我们发现了一个时间依赖性的偏侧效应，这表明，左手-右半球的性能持续到15秒，而右手-左半球的性能在所有的保留时间逐渐下降。 这表明触觉记忆痕迹在由左右半球处理时更容易衰退。
ABSTRACT The brain’s left hemisphere often displays advantages in processing verbal information, while the right hemisphere favours processing non-verbal information. In the haptic domain due to contra-lateral innervations, this functional lateralization is reflected in a hand advantage during certain functions. Findings regarding the hand-hemisphere advantage for haptic information remain contradictory, however. This study addressed these laterality effects and their interaction with memory retention times in the haptic modality. Participants performed haptic discrimination of letters, geometric shapes and nonsense shapes at memory retention times of 5, 15 and 30 s with the left and right hand separately, and we measured the discriminability index d′. The d′ values were significantly higher for letters and geometric shapes than for nonsense shapes. This might result from dual coding (naming + spatial) or/and from a low stimulus complexity. There was no stimulus-specific laterality effect. However, we found a time-dependent laterality effect, which revealed that the performance of the left hand-right hemisphere was sustained up to 15 s, while the performance of the right-hand-left hemisphere decreased progressively throughout all retention times. This suggests that haptic memory traces are more robust to decay when they are processed by the left hand-right hemisphere.
特定样本显式记忆访问中半球不对称的 ERP 证据
影响因子：
2.9
作者：
Küper;Zimmer. H. D.
通讯作者：
Zimmer. H. D.