A gorilla's senses are probably comparable to a human's but they have not been studied extensively. Since visibility is often restricted by dense vegetation, hearing is important for gorillas to locate one another and to detect danger. Gorillas seem to respond to unusual noises that are not a part of their normal activity B. Eyesight.
Gorillas have good eyesight which is used for finding and identifying food and to spot movement.
Gorillas have a good sense of smell and are able to detect strong odors in the environment such as human sweat or the musk of an unknown gorilla.