This level shows a cut through the trochlear nucleus that notches the MLF. The decussation of the MLF fibers under the trochlear are those passing between the 6th and 3rd nuclei. The trochlear nuclei and the MLF with the decussation forming a conspicuous figure as “two eyes and a nose”.

• This level shows a cut through the trochlear nucleus that notches the MLF. The decussation of the MLF fibers under the trochlear are those passing between the 6th and 3rd nuclei. The trochlear nuclei and the MLF with the decussation forming a conspicuous figure as “two eyes and a nose”.