...their hearing is good over a wide range of sounds. The sense of hearing apparently serves rather ns a warning sense which modifies reactions to other...as a control for definite auditory motor reactions. Sounds which never cause a motor reaction are found to reinforce an accompanying visual or tactile...

...CONCLUSIONS. 1. Observation of frogs in their natural habitat shows that they are stimulated by sounds. The sense of hearing apparently serves rather as a...accompanies the visual or tactual stimulus it serves to reinforce the visual or tactual reaction, but when given alone it never causes a motor reaction. 3....

...CONCLUSIONS. 1. Observation of frogs in their natural habitat shows that they are stimulated by sounds. The sense of hearing apparently serves rather as a...accompanies the visual or tactual stimulus it serves to reinforce the visual or tactual reaction, but when given alone it never causes a motor reaction. 3....

...observations and laboratory experiments show that their hearing is good over a wide range of sounds. The sense of hearing apparently serves rather as a...as a control for definite auditory motor reactions. Sounds which never cause a motor reaction are found to reinforce an accompanying visual or tactile...

...concludes that sounds varying in pitch from those of 50 to 10,000 vibrations aft'ect the frog. In nature, "the sense of hearing apparently serves rather as...a control for definite auditory motor reactions." In the spring months he found that sounds had a marked influence upon both males and females, but during...