Figure 7.

Stimulation of the optic lobe elicits more ipsilateral expression of chromatophores on the mantle than on the head and arms. The lateralization index is used to assess the symmetry of chromatophore expression upon electrical stimulation in the optic lobe. Positive indices indicate ipsilateral dominance and negative indices show contralateral dominance. Chromatophore expression on the mantle showed significantly ipsilateral control, whereas chromatophore expression on the head and arms was more variable. **p < 0.01.