Hand-drawn vector drawing of a Thinking Human Head with Steps to an open Door to the Brain, which is symbolized with Gears. The upper Head is drawn like a Labyrinth. Psychology Concept Image.

Hand-drawn vector drawing of a Head Examination with Gears, Steps, Cables, Oil Can, Wrench and Flashlight. Medical Examination Concept. Black-and-White sketch on a transparent background (.eps-file).