The two hemispheres communicate via dense bundles of nerve fibers called the corpus callosum.
As additional features of the subclass may be mentioned the absence of a corpus callosum connecting the right and left hemispheres of the brain,' and of a fossa in the septum between the two auricles of the heart.
In some cases (as in rat-kangaroos) this tooth retains its place and function until the animal has nearly, if not quite, 1 The presence or absence of the corpus callosum has been much disputed; the latest researches, however, indicate its absence.
As a direct result of this undoubtedly secondary reduction of the pallium - due to the excessive preponderance of the basal and lateral parts - the corpus callosum (i.e.
The participants all had a smaller corpus callosum than average person.