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Biol Bull 49: 61-68. (July 1925)
© 1925 Marine Biological Laboratory
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THE EFFECTS OF DISLOCATION OF THE EYE UPON THE ORIENTATION AND EQUILIBRIUM OF THE GOLDFISH (CARASSIUS AURATUS)

J. FRANK PEARCY 1 and THEODORE KOPPÁNYI 1

1 From the Hull Physiological Laboratory of the University of Chicago

1. The dislocation of one eye into the top of the head and the removal of the other eye produce a tilting of the whole body with its dorsoventral axis 45° to the side of the vertical. The reposition of the dislocated eye into its original orbit changes the orientation and equilibrium of the fish immediately, it regains its normal position in swimming and at rest.

2. The tilting is probably due to the attempts of the animal to keep its usual visual field.






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Copyright © 1925 by the Marine Biological Laboratory.