English to Spanish Medical Medical (general)

¿Cómo traduciriáis "fine grain approach" en el siguiente contexto?

Of note, many of the tasks used to assess executive functioning are tasks which incorporate multiple executive processes (for example, the WCST incorporates shifting attention as well as inhibition), so a fine grain approach to executive functioning as suggested by Miyake et al. [72] is not currently possible. However, such an approach would be invaluable at more precisely identifying particular executive deficits in bipolar disorder. This highlights the need for research into specific executive processes in bipolar disorder.