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  • Title: The shadow response of the cockroach periplaneta americana.
    Author: Meyer DJ, Margiotta JF, Walcott B.
    Journal: J Neurobiol; 1981 Jan; 12(1):93-6. PubMed ID: 7205251.
    Abstract:
    We show that the "escape response" (running) of the cockroach Periplaneta americana is interrupted when the insect runs through a shadow. Shadows were cast by holding an opaque plastic sheet so that the cockroach ran beneath it. In control experiments, a similarly positioned clear plastic sheet was ineffective. Removal of the shadow stimulus allowed running to continue. The likelihood that cockroaches would resume running after removal of the shadow stimulus decreased with the time they were allowed to remain in shadow.
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