Article
Intrinsic and Task-Dependent Coupling of Neuronal Population Activity in Human Parietal Cortex Highlights
Authors
d
Human electrocorticography reveals default network regions in parietal cortex
Brett L. Foster, Vinitha Rangarajan, William R. Shirer, Josef Parvizi
d
These parietal subregions display simultaneous response onset timing
Correspondence
d
Parietal connectivity patterns are similar for task, rest, and sleep states
In Brief
d
Parietal connectivity patterns are similar for electrophysiology and fMRI
Foster et al., 2015, Neuron 86, 1–13 April 22, 2015 ª2015 Elsevier Inc. http://dx.doi.org/10.1016/j.neuron.2015.03.018
[email protected]
Foster et al. use human intracranial recordings to quantify task and restingstate functional connectivity in the human parietal lobe. Electrophysiological data display a similar connectivity pattern for task, rest, and sleep, which matches fMRI data from the same subjects.
Please cite this article in press as: Foster et al., Intrinsic and Task-Dependent Coupling of Neuronal Population Activity in Human Parietal Cortex, Neuron (2015), http://dx.doi.org/10.1016/j.neuron.2015.03.018
Neuron
Article Intrinsic and Task-Dependent Coupling of Neuronal Population Activity in Human Parietal Cortex Brett L. Foster,1,2,* Vinitha Rangarajan,1 William R. Shirer,1 and Josef Parvizi1 1Laboratory of Behavioral & Cognitive Neurology, Stanford Human Intracranial Cognitive Electrophysiology Program (SHICEP), Department of Neurology & Neurological Sciences, School of Medicine, Stanford University, Stanford, CA 94305, USA 2Present address: Department of Psychology, Stanford University, Stanford, CA 94305, USA *Correspondence: [email protected] http://dx.doi.org/10.1016/j.neuron.2015.03.018
SUMMARY
Human neuroimaging studies have suggested that subregions of the medial and lateral parietal cortex form key nodes of a larger brain network supporting episodic memory retrieval. To explore the electrophysiological correlates of functional connectivity between these subregions, we recorded simultaneously from medial and lateral parietal cortex using intracranial electrodes in three human subjects. We observed electrophysiological co-activation of retrosplenial/posterior cingulate cortex (RSC/PCC) and angular gyrus (AG) in the high-frequency broadband (HFB, or high-gamma) range, for conditions that required episodic retrieval. During resting and sleeping states, slow fluctuations (
Intrinsic and Task-Dependent Coupling of Neuronal Population Activity in Human Parietal Cortex Highlights
Authors
d
Human electrocorticography reveals default network regions in parietal cortex
Brett L. Foster, Vinitha Rangarajan, William R. Shirer, Josef Parvizi
d
These parietal subregions display simultaneous response onset timing
Correspondence
d
Parietal connectivity patterns are similar for task, rest, and sleep states
In Brief
d
Parietal connectivity patterns are similar for electrophysiology and fMRI
Foster et al., 2015, Neuron 86, 1–13 April 22, 2015 ª2015 Elsevier Inc. http://dx.doi.org/10.1016/j.neuron.2015.03.018
[email protected]
Foster et al. use human intracranial recordings to quantify task and restingstate functional connectivity in the human parietal lobe. Electrophysiological data display a similar connectivity pattern for task, rest, and sleep, which matches fMRI data from the same subjects.
Please cite this article in press as: Foster et al., Intrinsic and Task-Dependent Coupling of Neuronal Population Activity in Human Parietal Cortex, Neuron (2015), http://dx.doi.org/10.1016/j.neuron.2015.03.018
Neuron
Article Intrinsic and Task-Dependent Coupling of Neuronal Population Activity in Human Parietal Cortex Brett L. Foster,1,2,* Vinitha Rangarajan,1 William R. Shirer,1 and Josef Parvizi1 1Laboratory of Behavioral & Cognitive Neurology, Stanford Human Intracranial Cognitive Electrophysiology Program (SHICEP), Department of Neurology & Neurological Sciences, School of Medicine, Stanford University, Stanford, CA 94305, USA 2Present address: Department of Psychology, Stanford University, Stanford, CA 94305, USA *Correspondence: [email protected] http://dx.doi.org/10.1016/j.neuron.2015.03.018
SUMMARY
Human neuroimaging studies have suggested that subregions of the medial and lateral parietal cortex form key nodes of a larger brain network supporting episodic memory retrieval. To explore the electrophysiological correlates of functional connectivity between these subregions, we recorded simultaneously from medial and lateral parietal cortex using intracranial electrodes in three human subjects. We observed electrophysiological co-activation of retrosplenial/posterior cingulate cortex (RSC/PCC) and angular gyrus (AG) in the high-frequency broadband (HFB, or high-gamma) range, for conditions that required episodic retrieval. During resting and sleeping states, slow fluctuations (
