I can't concentrate sufficiently in order to receive your thoughts directly.
The regression itself will last approximately twenty minutes - the maximum length of time the human mind is able to concentrate sufficiently to allow it to take place.
After three years of bond sales Dash couldn't concentrate sufficiently to enjoy a decent period of moodiness.
I screwed up my eyes, trying to concentrate sufficiently on my vision to produce a clear picture.
Even for quite modest transmitting power levels, high gain antennas can concentrate the power sufficiently to cause high power flux near their apertures.
The system acts as a discipline to ensure that you concentrate sufficiently on observation instead of being tempted to jump to conclusions.
But her pleasure in doing the routine often kept her from concentrating sufficiently, and the coach often criticized her for being sloppy.
Polish critics contended the book did not sufficiently concentrate on the question of securing food from local population.
(Glenn Gould said that one could learn to be a concert pianist in a matter of hours, if only one could concentrate sufficiently.)
Due to her commitment to the band, Turunen was not able to concentrate sufficiently on her schoolwork and her academic studies were interrupted.