کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6270717 | 1614739 | 2016 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hippocampal strata theta oscillations change their frequency and coupling during spatial learning
ترجمه فارسی عنوان
نوسانات تتا اعماق هیپوکامپ تغییر و فراوانی آنها در یادگیری فضایی را تغییر می دهد
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کلمات کلیدی
SASLFPSPCA1SMLElectrode array - آرایه الکترودanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of variancedentate gyrus - شکنج دندانه دارRelative power - قدرت نسبیMorris water maze - ماز آب آب موریسtheta oscillations - نوسانات تتاlocal field potential - پتانسیل منطقه ایLearning and memory - یادگیری و حافظه
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
چکیده انگلیسی
The theta rhythm is necessary for hippocampal-dependent spatial learning. It has been proposed that each hippocampal stratum can generate a current theta dipole. Therefore, considering that each hippocampal circuit (CA1, CA3, and Dentate Gyrus (DG)) contributes differently to distinct aspects of a spatial memory, the theta oscillations on each stratum and their couplings may exhibit oscillatory dynamics associated with different stages of learning. To test this hypothesis, the theta oscillations from five hippocampal strata were recorded in the rat during different stages of learning in a Morris maze. The peak power, the relative power (RP) and the coherence between hippocampal strata were analyzed. The early acquisition stage of the Morris task was characterized by the predominance of slow frequency theta activity and high coupling between specific hippocampal strata at slow frequencies. However, on the last training day, the theta oscillations were faster in all hippocampal strata, with tighter coupling at fast frequencies between the CA3 pyramidal stratum and other strata. Our results suggest that modifications to the theta frequency and its coupling can be a means by which the hippocampus differentially operates during acquisition and retrieval states.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 337, 19 November 2016, Pages 224-241
Journal: Neuroscience - Volume 337, 19 November 2016, Pages 224-241
نویسندگان
J. Jesús Hernández-Pérez, Blanca E. Gutiérrez-Guzmán, MarÃa E. Olvera-Cortés,