Levels of word processing and incidental memory: dissociable mechanisms in the temporal lobe.
Levels of word processing and incidental memory: dissociable mechanisms in the temporal lobe.
复制标题
文字处理和附带记忆的水平：颞叶的可分离机制。
DOI：
10.1097/00001756-200111160-00038
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发表时间：
2001
期刊：
影响因子：
1.7
通讯作者：
Papanicolaou,AC
中科院分区：
文献类型：
--
作者：
Castillo,EM;Simos,PG;Davis,RN;Breier,J;Fitzgerald,ME;Papanicolaou,AC
在编码过程中进行深层（如语义）处理有助于单词回忆。这一事实提出了一个问题，即是否存在特定的大脑机制来支持不同层次的信息处理，从而调节偶然记忆的表现。在这项研究中，我们获得了时空大脑激活配置文件，使用磁源成像，从10名成年志愿者，因为他们进行了浅（语音）处理任务和深（语义）处理任务。当需要对单词刺激进行音位分析时，激活主要局限于左颞上级回（22区）的后部。相反，当访问词汇/语义表征是必需的，激活主要是在左颞中回和内侧颞叶皮层。在单词编码过程中，每个机制的差异参与与随后的偶然记忆表现的巨大变化有关。
Word recall is facilitated when deep (eg semantic) processing is applied during encoding. This fact raises the question of the existence of specific brain mechanisms supporting different levels of information processing that can modulate incidental memory performance. In this study we obtained spatiotemporal brain activation profiles, using magnetic source imaging, from 10 adult volunteers as they performed a shallow (phonological) processing task and a deep (semantic) processing task. When phonological analysis of the word stimuli into their constituent phonemes was required, activation was largely restricted to the posterior portion of the left superior temporal gyrus (area 22). Conversely, when access to lexical/semantic representations was required, activation was found predominantly in the left middle temporal gyrus and medial temporal cortex. The differential engagement of each mechanism during word encoding was associated with dramatic changes in subsequent incidental memory performance.