Synchrony occurs when a group of neurons all fire action potentials at roughly the same time.
Synchrony is thought to play a role in grouping together neurons in time that represent different features of the same object.
It is an example of one of the simplest emergent phenomena in the brain, and is enabled among other things by neural oscilation at characteristic frequencies.
“zero pahse lag synchronsity”
Neural Synchrony in Cortical Networks - History, Concept and Current Status