[Electrophysiological and anatomical data on the interneurons involved in the visual orientation of the cricket (Gryllus bimaculatus)].

103 interneurones in the neck connective of the cricket were recorded, and two of them were anatomically identified by ionophoretic injection of cobalt. These neurones, when stimulated with repetitive flashes of light, show low pass filter properties. The stained neurones have their cell-body located in the protocerebron, and axonic arborisations extend towards the motoneurones of the thoracic ganglia.