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Detailed feeding patterns of the first phase of a meal were recorded by direct observation in mice. It was found that fasting increased duration of uninterrupted feeding bouts and shortened non-feeding intervals. Eating of normal palatable food increased duration of successive feeding bouts, but did not influence the duration of non-feeding intervals. Bitter food markedly inhibited the lengthening of successive feeding bouts, but did not influence the duration of non-feeding intervals. It is concluded that oral taste factors may produce positive feedbacks that strengthen feeding. The significance of this positive feedback mechanism has been discussed briefly.
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Piet R. Wiepkema (1971) studied this question.
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