Neurochemical Modulation Frequency Band of Hippocampal Theta Rhythm
نویسندگان
چکیده
منابع مشابه
Influence of Brain Neurochemical Systems on Frequency Spectra of Hippocampal Theta Rhythm
Chronic experiments with rabbits have shown that electrical destruction of dorsal amygdalofugal pathways leads to complete and persisted blockade of hippocampal theta rhythm in contrast to ventral one. In intact animals, electroand chemostimulation of amygdala nuclei, hypothalamus, reticular formation and medial septum nucleus lead to the formation of well pronounced theta rhythm in hippocampus...
متن کاملMultiple hypothalamic sites control the frequency of hippocampal theta rhythm.
Stimulation of a neural pathway originating in the brainstem reticular formation, with synapses in the medial hypothalamus, activates the hippocampal theta rhythm. The frequency of reticular-elicited theta is determined in the medial supramammillary nucleus (mSuM) completely in anaesthetised rats, but only partially when the animal is awake. We tested other medial hypothalamic sites for their c...
متن کاملFunctional Peculiarities of Hippocampal Theta-rhythm
The phenomenon of disappearance of the theta rhythm after lesioning of the septum and fornix has in its time stimulated a series of reports describing attempts to understand the roles of various structures in determining the electrical activity of the hippocampus and the functional significance of the theta rhythm. In chronic experiments with rabbits have shown that electrical destruction of do...
متن کاملHippocampal Theta Modulation of Neocortical Spike Times and Gamma Rhythm: A Biophysical Model Study
The hippocampal theta and neocortical gamma rhythms are two prominent examples of oscillatory neuronal activity. The hippocampus has often been hypothesized to influence neocortical networks by its theta rhythm, and, recently, evidence for such a direct influence has been found. We examined a possible mechanism for this influence by means of a biophysical model study using conductance-based mod...
متن کاملMedial prefrontal cortex cells show dynamic modulation with the hippocampal theta rhythm dependent on behavior.
Both the hippocampus and the medial prefrontal cortex are essential for successful performance in learning- and memory-related tasks. Within the hippocampus the theta rhythm plays an integral role in the timing of action potentials of hippocampal neurons responding to elements of any given task. Medial prefrontal cortex (mPFC) neurons display firing rate changes to specific facets of behavioral...
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ژورنال
عنوان ژورنال: Biomedical Journal of Scientific & Technical Research
سال: 2019
ISSN: 2574-1241
DOI: 10.26717/bjstr.2019.20.003410