User profiles for Omar J. Ahmed
Omar J AhmedAssociate Professor, University of Michigan Verified email at umich.edu Cited by 1557 |
Thalamic control of layer 1 circuits in prefrontal cortex
SJ Cruikshank, OJ Ahmed, TR Stevens… - Journal of …, 2012 - Soc Neuroscience
Knowledge of thalamocortical (TC) processing comes mainly from studying core thalamic
systems that project to middle layers of primary sensory cortices. However, most thalamic relay …
systems that project to middle layers of primary sensory cortices. However, most thalamic relay …
Running speed alters the frequency of hippocampal gamma oscillations
OJ Ahmed, MR Mehta - Journal of Neuroscience, 2012 - Soc Neuroscience
Successful spatial navigation is thought to employ a combination of at least two strategies:
the following of landmark cues and path integration. Path integration requires that the brain …
the following of landmark cues and path integration. Path integration requires that the brain …
The hippocampal rate code: anatomy, physiology and theory
OJ Ahmed, MR Mehta - Trends in neurosciences, 2009 - cell.com
Since the days of Cajal, the CA1 pyramidal cell has arguably received more attention than
any other neuron in the mammalian brain. Hippocampal CA1 pyramidal cells fire spikes with …
any other neuron in the mammalian brain. Hippocampal CA1 pyramidal cells fire spikes with …
Neuronal ensemble synchrony during human focal seizures
Seizures are classically characterized as the expression of hypersynchronous neural activity,
yet the true degree of synchrony in neuronal spiking (action potentials) during human …
yet the true degree of synchrony in neuronal spiking (action potentials) during human …
[PDF][PDF] Single neuron activity and theta modulation in postrhinal cortex during visual object discrimination
Postrhinal cortex, rodent homolog of the primate parahippocampal cortex, processes spatial
and contextual information. Our hypothesis of postrhinal function is that it serves to encode …
and contextual information. Our hypothesis of postrhinal function is that it serves to encode …
[HTML][HTML] Optogenetic Delay of Status Epilepticus Onset in an In Vivo Rodent Epilepsy Model
I Sukhotinsky, AM Chan, OJ Ahmed, VR Rao… - PloS one, 2013 - journals.plos.org
Epilepsy is a devastating disease, currently treated with medications, surgery or electrical
stimulation. None of these approaches is totally effective and our ability to control seizures …
stimulation. None of these approaches is totally effective and our ability to control seizures …
Dynamics of propofol-induced loss of consciousness across primate neocortex
The precise neural mechanisms underlying transitions between consciousness and
anesthetic-induced unconsciousness remain unclear. Here, we studied intracortical neuronal …
anesthetic-induced unconsciousness remain unclear. Here, we studied intracortical neuronal …
Thalamus and claustrum control parallel layer 1 circuits in retrosplenial cortex
The granular retrosplenial cortex (RSG) is critical for both spatial and non-spatial behaviors,
but the underlying neural codes remain poorly understood. Here, we use optogenetic circuit …
but the underlying neural codes remain poorly understood. Here, we use optogenetic circuit …
[HTML][HTML] A biologically constrained, mathematical model of cortical wave propagation preceding seizure termination
LR González-Ramírez, OJ Ahmed… - PLoS computational …, 2015 - journals.plos.org
Epilepsy—the condition of recurrent, unprovoked seizures—manifests in brain voltage
activity with characteristic spatiotemporal patterns. These patterns include stereotyped semi-…
activity with characteristic spatiotemporal patterns. These patterns include stereotyped semi-…
Ictal and preictal power changes outside of the seizure focus correlate with seizure generalization
JS Naftulin, OJ Ahmed, G Piantoni, JB Eichenlaub… - …, 2018 - Wiley Online Library
Objective The treatment of focal epilepsies is largely predicated on the concept that there is
a “focus” from which the seizure emanates. Yet, the physiological context that determines if …
a “focus” from which the seizure emanates. Yet, the physiological context that determines if …