system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
First commissure to develop
assistant
The correct answer is  The anterior commissure,connecting the archipallia(olfactory bulbs,piriform area and anterior pas of temporal lobes)of the two sides. REF.B D Chaurasia's Human Anatomy vol.3,fifth edition,pg.419