Figure 15.

Electrical stimulation of the optic lobe in anesthetized and quasi-awake animals evokes similar body pattern components. A, Anesthetized animal before stimulation. B, Oval squid showed six distinct body pattern components (DM, DMS, DLS, DH, DA, and DT; see below for abbreviations) during electrical stimulation. C, After 5 min recovery from anesthesia, the animal restored normal ventilation. D, This half-awake oval squid showed identical but stronger body pattern components when the same electrical stimulation was applied again. E, After 6 min of recovery from anesthesia, the animal displayed fin movement. F, Quasi-awake oval squid showing additional two body pattern components (MF and ES) when the same electrical stimulation was applied again. DM, Dark mantle; DMS, dark mantle stripe; DLS, dark longitudinal stripe; DH, dark head; DA, dark arms; DT, dark tentacles; MF, mottled fins; ES, eye spots.