An epiphenomenon can be an effect of primary phenomena, but cannot affect a primary phenomenon. She viewed consciousness as an epiphenomenon of excitation and inhibition of motor discharge. Addison dismissed this as a mere epiphenomenon. This has led some to suggest that phase locking is an epiphenomenon. Generally, when this occurs, the illness is an epiphenomenon and not the primary pathology. An example of a physiological epiphenomenon is, for example, time to complete a 100-meter sprint.