Population spike

In neuroscience, a population spike (PS) is the shift in electrical potential as a consequence of the movement of ions involved in the generation and propagation of action potentials. Population spikes often reflect synaptically induced firing and therefore, they can be classified as a type of field excitatory postsynaptic potentials.
In some areas of the brain, such .
The PS is usually recorded with an extracellular electrode placed close to neural cell bodies or axons. The first interpretations of hippocampal field potentials were developed by Per Andersen.