[Changes in the receptive field of pigeon tectum neurons subjected to vestibular and acoustic stimulation].

The changes in the receptive fields of neurons in the deep layers of the tectum opticum were studied as induced by labyrinthine and sound stimulation. Variations in the size of the receptive field, the particular direction of sensitive cells movement, duration of the reaction and amount of impulses in it were found. The results obtained and data from the literature allow one to suggest an active role of tectum opticum in the transformation of signals from the retina depending on the kind of information from other sensory systems.