| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
The Journal of Neurophysiology Vol. 86 No. 4 October 2001, pp. 1884-1898
Copyright ©2001 by the American Physiological Society
Laboratoire de Neurophysiologie, Faculté de Médecine, Université Laval, Quebec G1K 7P4, Canada
Grenier, François,
Igor Timofeev, and
Mircea Steriade.
Focal Synchronization of Ripples (80-200 Hz) in
Neocortex and Their Neuronal Correlates. J. Neurophysiol. 86: 1884-1898, 2001. Field potentials from different
neocortical areas and intracellular recordings from areas 5 and 7 in
acutely prepared cats under ketamine-xylazine anesthesia and during
natural states of vigilance in chronic experiments, revealed the
presence of fast oscillations (80-200 Hz), termed ripples. During
anesthesia and slow-wave sleep, these oscillations were selectively
related to the depth-negative (depolarizing) component of the field
slow oscillation (0.5-1 Hz) and could be synchronized over ~10 mm. The dependence of ripples on neuronal depolarization was also shown by
their increased amplitude in field potentials in parallel with
progressively more depolarized values of the membrane potential of
neurons. The origin of ripples was intracortical as they were also
detected in small isolated slabs from the suprasylvian gyrus. Of all
types of electrophysiologically identified neocortical neurons,
fast-rhythmic-bursting and fast-spiking cells displayed the highest
firing rates during ripples. Although linked with neuronal excitation,
ripples also comprised an important inhibitory component. Indeed, when
regular-spiking neurons were recorded with chloride-filled pipettes,
their firing rates increased and their phase relation with ripples was
modified. Thus besides excitatory connections, inhibitory processes
probably play a major role in the generation of ripples. During natural
states of vigilance, ripples were generally more prominent during the
depolarizing component of the slow oscillation in slow-wave sleep than
during the states of waking and rapid-eye movement (REM) sleep. The
mechanisms of generation and synchronization, and the possible
functions of neocortical ripples in plasticity processes are discussed.
This article has been cited by other articles:
|
|
 |
|
  G. A. Worrell, A. B. Gardner, S. M. Stead, S. Hu, S. Goerss, G. J. Cascino, F. B. Meyer, R. Marsh, and B. Litt High-frequency oscillations in human temporal lobe: simultaneous microwire and clinical macroelectrode recordings Brain, April 1, 2008; 131(4): 928 - 937. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. Bedard and A. Destexhe A Modified Cable Formalism for Modeling Neuronal Membranes at High Frequencies Biophys. J., February 15, 2008; 94(4): 1133 - 1143. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. L. Jones and S. C. Baraban Characterization of Inhibitory Circuits in the Malformed Hippocampus of Lis1 Mutant Mice J Neurophysiol, November 1, 2007; 98(5): 2737 - 2746. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. Urrestarazu, R. Chander, F. Dubeau, and J. Gotman Interictal high-frequency oscillations (100 500 Hz) in the intracerebral EEG of epileptic patients Brain, September 1, 2007; 130(9): 2354 - 2366. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W. van Drongelen, H. Koch, F. P. Elsen, H. C. Lee, A. Mrejeru, E. Doren, C. J. Marcuccilli, M. Hereld, R. L. Stevens, and J.-M. Ramirez Role of Persistent Sodium Current in Bursting Activity of Mouse Neocortical Networks In Vitro J Neurophysiol, November 1, 2006; 96(5): 2564 - 2577. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Molle, O. Yeshenko, L. Marshall, S. J. Sara, and J. Born Hippocampal Sharp Wave-Ripples Linked to Slow Oscillations in Rat Slow-Wave Sleep J Neurophysiol, July 1, 2006; 96(1): 62 - 70. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. Crochet, P. Fuentealba, Y. Cisse, I. Timofeev, and M. Steriade Synaptic Plasticity in Local Cortical Network In Vivo and Its Modulation by the Level of Neuronal Activity Cereb Cortex, May 1, 2006; 16(5): 618 - 631. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. Edwards, M. Soltani, L. Y. Deouell, M. S. Berger, and R. T. Knight High Gamma Activity in Response to Deviant Auditory Stimuli Recorded Directly From Human Cortex J Neurophysiol, December 1, 2005; 94(6): 4269 - 4280. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. Marin, J. Mpdozis, E. Sentis, T. Ossandon, and J. C. Letelier Oscillatory Bursts in the Optic Tectum of Birds Represent Re-Entrant Signals from the Nucleus Isthmi Pars Parvocellularis J. Neurosci., July 27, 2005; 25(30): 7081 - 7089. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. J. Staba, T. D. Ard, A. M. Benison, and D. S. Barth Intracortical Pathways Mediate Nonlinear Fast Oscillation (>200 Hz) Interactions Within Rat Barrel Cortex J Neurophysiol, May 1, 2005; 93(5): 2934 - 2939. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. D. Traub, D. Contreras, M. O. Cunningham, H. Murray, F. E. N. LeBeau, A. Roopun, A. Bibbig, W. B. Wilent, M. J. Higley, and M. A. Whittington Single-Column Thalamocortical Network Model Exhibiting Gamma Oscillations, Sleep Spindles, and Epileptogenic Bursts J Neurophysiol, April 1, 2005; 93(4): 2194 - 2232. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. O. Cunningham, D. M. Halliday, C. H. Davies, R. D. Traub, t. l. E. H. Buhl, and M. A. Whittington Coexistence of gamma and high-frequency oscillations in rat medial entorhinal cortex in vitro J. Physiol., September 1, 2004; 559(2): 347 - 353. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. A. Worrell, L. Parish, S. D. Cranstoun, R. Jonas, G. Baltuch, and B. Litt High-frequency oscillations and seizure generation in neocortical epilepsy Brain, July 1, 2004; 127(7): 1496 - 1506. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. Maex and E. De Schutter Resonant Synchronization in Heterogeneous Networks of Inhibitory Neurons J. Neurosci., November 19, 2003; 23(33): 10503 - 10514. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. T. Dickson, G. Biella, and M. de Curtis Slow Periodic Events and Their Transition to Gamma Oscillations in the Entorhinal Cortex of the Isolated Guinea Pig Brain J Neurophysiol, July 1, 2003; 90(1): 39 - 46. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. Brunel and X.-J. Wang What Determines the Frequency of Fast Network Oscillations With Irregular Neural Discharges? I. Synaptic Dynamics and Excitation-Inhibition Balance J Neurophysiol, July 1, 2003; 90(1): 415 - 430. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
F. Wendling, F. Bartolomei, J. J. Bellanger, J. Bourien, and P. Chauvel Epileptic fast intracerebral EEG activity: evidence for spatial decorrelation at seizure onset Brain, June 1, 2003; 126(6): 1449 - 1459. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Siegel and P. Konig A Functional Gamma-Band Defined by Stimulus-Dependent Synchronization in Area 18 of Awake Behaving Cats J. Neurosci., May 15, 2003; 23(10): 4251 - 4260. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. J. Staba, B. Brett-Green, M. Paulsen, and D. S. Barth Effects of Ventrobasal Lesion and Cortical Cooling on Fast Oscillations (>200 Hz) in Rat Somatosensory Cortex J Neurophysiol, May 1, 2003; 89(5): 2380 - 2388. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. S. Barth Submillisecond Synchronization of Fast Electrical Oscillations in Neocortex J. Neurosci., March 15, 2003; 23(6): 2502 - 2510. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
F. Grenier, I. Timofeev, and M. Steriade Neocortical Very Fast Oscillations (Ripples, 80-200 Hz) During Seizures: Intracellular Correlates J Neurophysiol, February 1, 2003; 89(2): 841 - 852. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. L. Buhl, K. D. Harris, S. G. Hormuzdi, H. Monyer, and G. Buzsaki Selective Impairment of Hippocampal Gamma Oscillations in Connexin-36 Knock-Out Mouse In Vivo J. Neurosci., February 1, 2003; 23(3): 1013 - 1018. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. J. Staba, C. L. Wilson, A. Bragin, I. Fried, and J. Engel Jr Quantitative Analysis of High-Frequency Oscillations (80-500 Hz) Recorded in Human Epileptic Hippocampus and Entorhinal Cortex J Neurophysiol, October 1, 2002; 88(4): 1743 - 1752. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Bazhenov, I. Timofeev, M. Steriade, and T. J. Sejnowski Model of Thalamocortical Slow-Wave Sleep Oscillations and Transitions to Activated States J. Neurosci., October 1, 2002; 22(19): 8691 - 8704. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Bragin, I. Mody, C. L. Wilson, and J. Engel Jr Local Generation of Fast Ripples in Epileptic Brain J. Neurosci., March 1, 2002; 22(5): 2012 - 2021. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |
