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Invariant visual representation by single neurons in the human brain
A remarkable subset of MTL neurons are selectively activated by strikingly different pictures of given individuals, landmarks or objects and in some cases even by letter strings with their names, which suggest an invariant, sparse and explicit code, which might be important in the transformation of complex visual percepts into long-term and more abstract memories.
Cellular networks underlying human spatial navigation
Evidence is presented for a neural code of human spatial navigation based on cells that respond at specific spatial locations and cells thatrespond to views of landmarks that are present primarily in the hippocampus and the parahippocampal region.
Quantitative analysis of high-frequency oscillations (80-500 Hz) recorded in human epileptic hippocampus and entorhinal cortex.
- R. Staba, Charles L. Wilson, A. Bragin, I. Fried, J. Engel
- Psychology, MedicineJournal of neurophysiology
- 1 October 2002
The strong association between FR and regions of seizure initiation supports the view that FR reflects pathological hypersynchronous events crucially associated with seizure genesis.
Coupling Between Neuronal Firing, Field Potentials, and fMRI in Human Auditory Cortex
- R. Mukamel, Hagar Gelbard, A. Arieli, U. Hasson, I. Fried, R. Malach
- Biology, MedicineScience
- 5 August 2005
Functional magnetic resonance imaging (fMRI) is an important tool for investigating human brain function, but the relationship between the hemodynamically based fMRI signals in the human brain and…
Single-Neuron Responses in Humans during Execution and Observation of Actions
- R. Mukamel, A. Ekstrom, J. Kaplan, M. Iacoboni, I. Fried
- Biology, MedicineCurrent Biology
- 27 April 2010
Recordings of extracellular activity from 1177 cells in human medial frontal and temporal cortices while patients executed or observed hand grasping actions and facial emotional expressions suggest that multiple systems in humans may be endowed with neural mechanisms of mirroring for both the integration and differentiation of perceptual and motor aspects of actions performed by self and others.
Broadband Shifts in Local Field Potential Power Spectra Are Correlated with Single-Neuron Spiking in Humans
- Jeremy R. Manning, J. Jacobs, I. Fried, M. Kahana
- Physics, MedicineThe Journal of Neuroscience
- 28 October 2009
It is found that firing rates were positively correlated with broadband (2–150 Hz) shifts in the LFP power spectrum and narrowband oscillations correlated both positively and negatively with firing rates at different recording sites.
Interhemispheric correlations of slow spontaneous neuronal fluctuations revealed in human sensory cortex
Slow spontaneous modulations in firing rate and gamma LFP as the likely correlates of spontaneous fMRI fluctuations in the human sensory cortex are pointed to.
Hippocampal and Entorhinal Cortex High‐Frequency Oscillations (100–500 Hz) in Human Epileptic Brain and in Kainic Acid‐Treated Rats with Chronic Seizures
Summary: Purpose: Properties of oscillations with frequencies >100 Hz were studied in kainic acid (KA)‐treated rats and compared with those recorded in normal and kindled rats as well as in patients…
High‐frequency oscillations in human brain
Two similar types of high‐frequency field oscillations recorded from the entorhinal cortex and hippocampus of patients with mesial temporal lobe epilepsy are described, which are found in the epileptogenic region and may reflect pathological hypersynchronous population spikes of bursting pyramidal cells.
Sleep Spindles in Humans: Insights from Intracranial EEG and Unit Recordings
- T. Andrillon, Y. Nir, +4 authors I. Fried
- Psychology, MedicineThe Journal of Neuroscience
- 7 December 2011
It is found that spindles occur across multiple neocortical regions, and less frequently also in the parahippocampal gyrus and hippocampus, and that deeper NREM sleep is associated with a reduction in spindle occurrence and spindle frequency.