Verbal recall in amnesia: Does scene construction matter?
Verbal recall in amnesia: Does scene construction matter?
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失忆症中的言语回忆：场景构建重要吗？
DOI：
10.1016/j.neuropsychologia.2023.108543
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发表时间：
2023
期刊：
影响因子：
2.6
通讯作者：
Verfaellie,Mieke
中科院分区：
文献类型：
--
作者：
Palombo,DanielaJ;Jones,Dominoe;Strang,Caroline;Verfaellie,Mieke
海马体在情景记忆和想象中起着关键作用。一种理论模型认为，海马体对场景构建很重要，即在一个人的脑海中形成和保持基于场景的表征的能力。为了验证这一观点提出的一个观点，我们研究了当要记住的内容对场景构建有很高要求时，健忘症是否与更严重的记忆损伤有关。为此，我们检查了7名海马病变并伴有场景构建缺陷的失忆症患者对抽象（即低场景意象）和具体、高场景意象的单词的自由回忆表现，并将他们的表现与人口统计匹配的健康对照组进行了比较。不出所料，健忘症患者的自由回忆能力严重受损；然而，他们的损伤并没有随着字型的变化而变化。也就是说，他们对唤起高场景意象和低场景意象的词汇的认知障碍同样严重。这些发现表明，海马体在言语记忆中的作用延伸到对场景构建要求不高的内容。讨论了这些发现的理论意义。
The hippocampus plays a critical role in episodic memory and imagination. One theoretical model posits that the hippocampus is important for scene construction, namely, the ability to conjure and maintain a scene-based representation in one's mind. To test one idea put forth by this view, we examined whether amnesia is associated with more severe impairment in memory when the to-be-remembered content places high demands on scene construction. To do so, we examined free recall performance for abstract (i.e., low scene imagery) and concrete, high scene-imagery single words in seven amnesic patients with hippocampal lesions and concomitant scene-construction deficits, and compared their performance to demographically matched healthy controls. As expected, amnesic patients were severely impaired in their free recall performance; however, their impairment did not differ as a function of word type. That is, their impairment was equally severe for words that evoke high versus low scene imagery. These findings suggest that the role of the hippocampus in verbal memory extends to content that does not place high demands on scene construction. Theoretical implications of these findings are discussed.