Temporal and quantitative relations between excitatory and inhibitory inputs in the cortex are
central to its activity, yet they remain poorly understood. In particular, a controversy exists …

How can neural activity propagate through cortical networks built with weak, stochastic
synapses? We find precise repetitions of spontaneous patterns of synaptic inputs in neocortical …

Thalamic inputs of cells in sensory cortices are outnumbered by local connections. Thus, it
was suggested that robust sensory response in layer 4 emerges due to synchronized …

We have recorded intracellularly from pairs of neurons less than 500 μm distant from one
another in V1 of anesthetized cats. Cross-correlation of spontaneous fluctuations in membrane …

It was recently discovered that subthreshold membrane potential fluctuations of cortical
neurons can precisely repeat during spontaneous activity, seconds to minutes apart, both in …

Membrane potentials of cortical neurons fluctuate between a hyperpolarized (‘down’) state
and a depolarized (‘up’) state which may be separated by up to 30 mV, reflecting rapid but …

We have examined the spatial integration properties of complex cells to determine whether
some of their responses can be described by a maximum operation (MAX)-like computation, …

Feedforward models of visual cortex appear to be inconsistent with a well-known property of
cortical cells: contrast invariance of orientation tuning. The models' fixed threshold broadens …

In most of the in vivo electrophysiological studies of cortical processing, which are
extracellular, the spike-triggered local field potential average (LFP STA) is the measure used to …

Optogenetic silencing allows time-resolved functional interrogation of defined neuronal
populations. However, the limitations of inhibitory optogenetic tools impose stringent constraints …