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September 1930


Author Affiliations


From the Departments of Ophthalmology and Physiology, Northwestern University.

Arch Ophthalmol. 1930;4(3):342-347. doi:10.1001/archopht.1930.00810110044007

Certain persons experience discomfort in traveling by automobile or railroad, though this number is relatively few as compared to those affected by riding in a ship or aeroplane. The universal experience in all forms of travel is that the smoother the trip, the greater the degree of comfort, so that it is now generally admitted that labyrinthine stimulation is an important factor in all these cases. Children are less subject to seasickness than adults, but in car-sickness the reverse is true, probably because the adult has already acquired a tolerance to this type of locomotion. The tendency to car-sickness often runs in families, suggesting a hereditary predisposition. Those susceptible usually avoid riding backward and favor the front seat of the automobile, where there is less jarring, and where the view is less constricted.

When the land traveler gazes at the scenery, an ocular phenomenon results which is

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