Results 91 to 100 of about 252 (120)
Local Generation and Propagation of Ripples along the Septotemporal Axis of the Hippocampus [PDF]
Journal of Neuroscience, 2013 A topographical relationship exists between the septotemporal segments of the hippocampus and their entorhinal–neocortical targets, but the physiological organization of activity along the septotemporal axis is poorly understood. We recorded sharp-wave ripple patterns in rats during sleep from the entire septotemporal axis of the CA1 pyramidal layer ...
Erik W Schomburg +2 more
exaly +8 more sources
Septotemporal variation in dynamics of theta: speed and habituation
Journal of Neurophysiology, 2011 Theta (6–12 Hz) field potentials and the synchronization (coherence) of these potentials present neural network indices of hippocampal physiology. Theta signals within the hippocampal formation may reflect alterations in sensorimotor integration, the flow of sensory input, and/or distinct cognitive operations.
James R. Hinman +2 more
exaly +4 more sources
Traveling Theta Waves along the Entire Septotemporal Axis of the Hippocampus [PDF]
Neuron, 2012 A topographical relationship exists between the hippocampus-entorhinal cortex and the neocortex. However, it is not known how these anatomical connections are utilized during information exchange and behavior. We recorded theta oscillations along the entire extent of the septotemporal axis of the hippocampal CA1 pyramidal layer.
Sebastien Royer +2 more
exaly +7 more sources
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Vascular network of the rat hippocampus is not homogeneous along the septotemporal axis
Brain Research, 2003Qualitative and quantitative image analysis of hippocampal vascular bed, after transcardial perfusion of India ink, reveals significant differences among hippocampal subfields and along the septotemporal axis of the rat hippocampus. Ventral hippocampus exhibits significantly higher levels of vascularization compared to dorsal hippocampus, which ...
Ioannis Grivas +2 more
exaly +3 more sources
Journal of Comparative Neurology, 1984
AbstractThe Projections o the entorhinal and perirhinal cortices to the hippocampus in the cat have been studied with retrograde and anterograde tracing techniques. Retarogradely transported tracers, which were injected at different levels along the septotemporal longitudinal hippocampal axis, result in labeled neurons in superficial entorhinal ...
Hendrik Groenewegen, Menno P Witter
exaly +3 more sources
AbstractThe Projections o the entorhinal and perirhinal cortices to the hippocampus in the cat have been studied with retrograde and anterograde tracing techniques. Retarogradely transported tracers, which were injected at different levels along the septotemporal longitudinal hippocampal axis, result in labeled neurons in superficial entorhinal ...
Hendrik Groenewegen, Menno P Witter
exaly +3 more sources
Brain Research, 1986
Hippocampal slices are generally treated as equivalent regardless of their site of origin along the septotemporal axis. In this study, spontaneous epileptiform bursting was induced in area CA3 of rat hippocampal slices by bathing them in 7 mM potassium. The frequency of spontaneous bursting was measured in all viable slices from 12 hippocampi.
Wilkie A Wilson, W A Wilson
exaly +3 more sources
Hippocampal slices are generally treated as equivalent regardless of their site of origin along the septotemporal axis. In this study, spontaneous epileptiform bursting was induced in area CA3 of rat hippocampal slices by bathing them in 7 mM potassium. The frequency of spontaneous bursting was measured in all viable slices from 12 hippocampi.
Wilkie A Wilson, W A Wilson
exaly +3 more sources
Theta and Gamma Coherence Along the Septotemporal Axis of the Hippocampus
Journal of Neurophysiology, 2009Theta and gamma rhythms synchronize neurons within and across brain structures. Both rhythms are widespread within the hippocampus during exploratory behavior and rapid-eye-movement (REM) sleep. How synchronous are these rhythms throughout the hippocampus?
Helen R, Sabolek +6 more
openaire +2 more sources
Ketamine disrupts theta synchrony across the septotemporal axis of the CA1 region of hippocampus
Journal of Neurophysiology, 2013The hippocampal theta signal reflects moment-to-moment variation in the synchrony of synaptic input to hippocampal neurons. Consistent with the topography of hippocampal afferents, the synchrony (coherence) of the theta signal varies across the septotemporal axis.
James R. Hinman +2 more
exaly +3 more sources
Striking Variations in Corticosteroid Modulation of Long-Term Potentiation along the Septotemporal Axis of the Hippocampus [PDF]
Journal of Neuroscience, 2007 The ability to express long-term potentiation (LTP) of reactivity to afferent stimulation along the septotemporal axis was explored in transverse rat hippocampal slices. The ventral pole of the hippocampus (VH) was found to be much impaired in ability to express LTP compared with the rest of the hippocampus.
Nicola Maggio, Menahem Segal
exaly +3 more sources