Intramodal and cross-modal sensory integration by crayfish optomotor neurons

1. 1. Action potentials from crayfish optomotor neurons were recorded extracellularly in situ during natural visual and gravitational stimulation. 2. 2. A small fraction of optomotor neurons apparently received input from statocyst afferents having sensitivities to body orientation in two different geometric planes. 3. 3. One type of optomotor neuron integrates statocyst and visual input in such a way that visual stimulation is much less excitatory at certain body positions than at other positions.