Spontaneous spiking activity of thousands of neurons in rat hippocampal dissociated cultures.

These data contain a record of neuron spiking activity in rat hippocampal dissociated cultures.
The recordings were performed for days in vitro (DIV) 6 through 35 with all cultures being
recorded multiple times throughout development. The recordings were performed with a large
multielectrode array (Multichannel Systems, square lattice, 60 electrodes, 200 μm interelectrode
spacing, 30 μm electrode diameter, flat electrodes). The cultures were not stimulated, so these
data represent spontaneous activity. In total, 435 recordings are provided, most of which possess
about one hundred neurons (min: 3, max: 142, mean: 91, total: 39,529). The average firing
rate of the neurons was 1.9 Hz. The data were binned at 20 kHz and are presented in units of
bins (0.05 ms). The lengths of the recordings were approximately 1 hour.