Mark is meditating by concentrating on a specific sound to narrow his attention. mark is using which style of meditation

Mark is using "focused attention meditation".

This is a style of Buddhist practice includes maintaining specific consideration minute by minute on a picked object, such the vibes of breathing or the sound in the given example, or even the vibes of strolling. Individuals utilize focused attention (FA) meditation to accomplish long term intellectual additions from the development of new mind cells in the hippocampus.