Public review preview. Candidate definitions have not yet been read by the two reviewers. Each entry shows its review status.
biological

Judged: two independent readers; copy check clear.

optic tectum

optic tectum The optic tectum refers to the front pair of the quadrigeminal bodies, also known as the superior colliculi.

The optic tectum refers to the front pair of the quadrigeminal bodies, also known as the superior colliculi. It helps coordinate general orienting responses to visual input, such as turning the whole body or reaching toward what is seen.