Theta band network supporting human episodic memory is not activated in the seizure onset zone

被引：6
|
作者：
Young, James J. [1 ]
Rudebeck, Peter H. [2 ,4 ]
Marcuse, Lara V. [1 ]
Fields, Madeline C. [1 ]
Yoo, Ji Yeoun [1 ]
Panov, Fedor [3 ]
Ghatan, Saadi [3 ]
Fazl, Arash [1 ]
Mandelbaum, Sarah [1 ]
Baxter, Mark G. [2 ,4 ]
机构：
[1] Icahn Sch Med Mt Sinai, Dept Neurol, One Gustave L Levy Pl, New York, NY 10029 USA
[2] Icahn Sch Med Mt Sinai, Dept Neurosci, One Gustave L Levy Pl, New York, NY 10029 USA
[3] Icahn Sch Med Mt Sinai, Dept Neurosurg, One Gustave L Levy Pl, New York, NY 10029 USA
[4] Icahn Sch Med Mt Sinai, Friedman Brain Inst, One Gustave L Levy Pl, New York, NY 10029 USA
来源：
NEUROIMAGE | 2018年 / 183卷
关键词：
Episodic memory; Coherence; Theta band; Seizure onset zone; Electrocorticography; TEMPORAL-LOBE EPILEPSY; PREFRONTAL CORTEX; NEURONAL INTERACTIONS; PHASE-LOCKING; BRAIN; IMPAIRMENT; RETRIEVAL; FORNIX; MONKEYS; OBJECTS;
D O I：
10.1016/j.neuroimage.2018.08.052
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
Episodic memory, everyday memory for events, is frequently impaired in patients with epilepsy. We tested patients undergoing intracranial electroencephalography (intracranial EEG) monitoring for the treatment of medically-refractory epilepsy on a well-characterized paradigm that requires episodic memory. We report that an anatomically diffuse network characterized by theta-band (4-7 Hz) coherence is activated at the time of target selection in a task that requires episodic memory. This distinct network of oscillatory activity is absent when episodic memory is not required. Further, the theta band synchronous network was absent in electrodes within the patient's seizure onset zone (SOZ). Our data provide novel empirical evidence for a set of brain areas that supports episodic memory in humans, and it provides a pathophysiologic mechanism for the memory deficits observed in patients with epilepsy.
引用
收藏
页码：565 / 573
页数：9
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