In a device for studying and recording electrophysiological phenomena in culture of excitable tissues comprising a lower half card with a perfusion membrane in a perfusion chamber sealed by a permeable and transparent membrane and an upper half card with a flexible printed circuit bearing a network of electrode and fitted with a cap for insuring the closure of the device, the improvement comprising the upper half card being comprised of an upper half and a lower half card which when assembled together for recording yield a functional set up.
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