Which preposition to use with impressibility

of Occurrences 3%

The sympathy with the spirit and impulses of the time, which in the first reveals the youthful impressibility of the poet, in the last discloses itself in maturer forms, in more personal expressions.

by Occurrences 1%

And yet, delicate, refining, daintily epicurean, as he may seem, when he writes of giants such as Hogarth or Shakespeare, though often but in a stray note, you catch the sense of veneration with which those great names in past literature and art brooded over his intelligence, his undiminished impressibility by the great effects in them.

Which preposition to use with  impressibility