Green iguanas have a white photosensory organ on the top of their heads called the parietal eye ( also called third eye, pineal eye or pineal gland ), in contrast to most other lizards that have lost this primitive feature.
22.
The asymmetrical whole consists of the " eye " to the left and the pineal sac to the right . " In animals that have lost the parietal eye, including mammals, the pineal sac is retained and condensed into the form of the pineal gland ."
23.
The human " parietal eye fields " and " parietal reach region ", equivalent to LIP and MIP in the monkey, also appear to be organized in gaze-centered coordinates so that their goal-related activity is " remapped " when the eyes move.
