کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4338795 1614882 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Changes in hippocampal theta activity during initiation and maintenance of running in the rat
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Changes in hippocampal theta activity during initiation and maintenance of running in the rat
چکیده انگلیسی

Hippocampal theta wave can be induced by running and is linked to cognitive functions. The initiation and maintenance of hippocampal theta during a complete course of running, however, is not well understood. Using a treadmill exercise model, this study wirelessly recorded the hippocampal electroencephalogram, nuchal electromyogram, electrocardiogram, and three-dimensional accelerations of 15 male young rats. Although the speed of the treadmill was constant during the entire 30-min running course, the frequency (Frq) and amplitude (Amp) of hippocampal theta changed dynamically. During the first 24 s (phase I), the Frq, Amp, electromyogram amplitude (EMG), heart rate (HR), and physical activity (PA) all increased. The changes in the Frq, EMG, and PA were among the fastest and the change in the HR was the slowest. After 24 s (phase II), the Frq declined to near baseline but the Amp remained persistently high. The slope of the Frq, Amp, and HR over time during phase I was different to that during phase II. During phase II, the Frq and Amp were significantly correlated with the PA and EMG. We conclude that treadmill running can be classified into two phases based on hippocampal functioning, and hippocampal theta varies with exercise effort during the treadmill running.

▶Treadmill running can be classified into two phases according to EEG responses. ▶Theta frequency and amplitude differs in their response rate during initial phase. ▶Hippocampal theta codes for some aspects of perceived exertion during running.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 194, 27 October 2011, Pages 27–35
نویسندگان
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