It is demonstrated here that neurons in spatially separate columns can synchronize their oscillatory responses, which has, on average, no phase difference, depends on the spatial separation and the orientation preference of the cells and is influenced by global stimulus properties.Expand
It is argued that coherence among subthreshold membrane potential fluctuations could be exploited to express selective functional relationships during states of expectancy or attention, and these dynamic patterns could allow the grouping and selection of distributed neuronal responses for further processing.Expand
The mammalian visual system is endowed with a nearly infinite capacity for the recognition of patterns and objects. To have acquired this capability the visual system must have solved what is a… Expand
Dysfunctional oscillations may arise owing to anomalies in the brain's rhythm-generating networks of GABA (γ-aminobutyric acid) interneurons and in cortico-cortical connections.Expand
The results demonstrate that local neuronal populations in the visual cortex engage in stimulus-specific synchronous oscillations resulting from an intracortical mechanism, and may provide a general mechanism by which activity patterns in spatially separate regions of the cortex are temporally coordinated.Expand
This approach permits assessment of event related variations in discharge rate but it precludes detection of any covariations in the amplitude or timing of distributed responses if these covariations result from internal neuronal interactions rather than from time locking to stimulus or motor event.Expand
The first measurements of the electrical activity of the brain revealed prominent oscillatory activity, and until more recently the analysis of oscillatory patterns in the electroencephalogram and in field potentials recorded with intracerebral macroelectrodes has remained a major research tool of neuro physiology.Expand
Evidence is reviewed suggesting that the resulting rhythmic network inhibition interacts with excitatory input to pyramidal cells such that the more excited cells fire earlier in the gamma cycle, enabling transmission and read out of amplitude information within a single gamma cycle without requiring rate integration.Expand
These conditions suggest a rule (called here the ABS rule) for activity-dependent synaptic modifications that differs from the classical Hebb rule and that can account for both homosynaptic LTD and LTP as well as for heterOSynaptic competition and associativity.Expand
It is proposed that the pattern of synchronization flexibly determines thepattern of neuronal interactions, and that the mutual influence among neuronal groups depends on the phase relation between rhythmic activities within the groups.Expand