affect

1. n. A transient neurophysiological response to a stimulus that excites a coordinated system of bodily and mental responses including facial expressions that inform us about our relationship to the stimulus and prepare us to deal with it in some way. The basic affects are anger, fear, surprise, happiness, disgust, and contempt.
2. n. The subjective feeling or evaluative component of human experience or thought.
3. v. To have an effect upon.