Binding deficits in visual short-term memory in patients with temporal lobe lobectomy.

Binding deficits in visual short-term memory in patients with temporal lobe lobectomy.
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颞叶叶切除术患者视觉短期记忆的结合缺陷。

DOI:
10.1002/hipo.22998
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发表时间:
2019-03
期刊:
影响因子:
3.5
通讯作者:
Husain M
Husain M
中科院分区:
医学3区
文献类型:
--
作者:
Zokaei N;Nour MM;Sillence A;Drew D;Adcock J;Stacey R;Voets N;Sen A;Husain M

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内侧颞叶(MTL)的经典观点已经确定它在长期记忆(LTM)中起着至关重要的作用。在这里,我们证明,在接受前颞叶切除术治疗药物耐药性癫痫的患者样本中,MTL在短期记忆(STM)中还起着特定的因果作用。患者(n=22)和年龄匹配的健康对照参与者(n=26)使用敏感的连续报告测量进行STM任务。这种范式使我们能够在逐个试验的基础上独立地检查对象身份,位置和对象位置绑定的回忆记忆。我们的研究结果指出,MTL在对象位置绑定中的具体参与,但至关重要的是,不保留对象身份或位置。因此,MTL似乎执行特定的计算:绑定属于内存的不同功能。这些结果呼应从以前的研究结果,已经确定了MTL在关系绑定的LTM的作用,并支持MTL区域执行这样的功能STM和LTM的建议,独立的保留时间。此外,这些发现和这里采用的方法可能提供一个简单的,敏感的和临床上有价值的手段来测试记忆功能障碍的MTL疾病。
Classical views of the medial temporal lobe (MTL) have established that it plays a crucial role in long‐term memory (LTM). Here we demonstrate, in a sample of patients who have undergone anterior temporal lobectomy for the treatment of pharmacoresistant epilepsy, that the MTL additionally plays a specific, causal role in short‐term memory (STM). Patients (n=22) and age‐matched healthy control participants (n=26) performed a STM task with a sensitive continuous report measure. This paradigm allowed us to examine recall memory for object identity, location and object‐location binding, independently on a trial‐by‐trial basis. Our findings point to a specific involvement of MTL in object‐location binding, but, crucially, not retention of either object identity or location. Therefore the MTL appears to perform a specific computation: binding disparate features that belong to a memory. These results echo findings from previous studies, which have identified a role for the MTL in relational binding for LTM, and support the proposal that MTL regions perform such a function for both STM and LTM, independent of the retention duration. Furthermore, these findings and the methodology employed here may provide a simple, sensitive and clinically valuable means to test memory dysfunuction in MTL disorders.
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