association fibresNerve fibres running just under the surface (CORTEX) of the brain and connecting adjacent parts of the cortex.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
association fibresnerve fibres which connect the white matter of the brain interior with the cortex.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005