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The anatomical location of the control centre(s) for the endogenous tidal rhythm of swimming activity shown by Corophium volutator (Pallas) has been investigated using a selective chilling technique. Rephasing occurred on chilling the whole animal to −3 °C or on chilling either the supra- or sub-oesophageal ganglion alone, whereas cold pulses applied to the telson or mid-body regions were without effect. Ablating the eyes had no effect on the endogenous rhythm. The results are interpreted in terms of two autonomous control centres.
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Harris et al. (1984) studied this question.
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