Cortical vigilance refers to a state of intense concentration and awareness, which can be contrasted with its antonyms such as lethargy, apathy or indifference. Lethargy is a state of physical or mental sluggishness, while apathy is characterized by a lack of interest or enthusiasm. Indifference, on the other hand, refers to a lack of concern, which may lead to careless behavior. Therefore, the antonyms of cortical vigilance signify a lack of focus, attention and active engagement. It is crucial to be vigilant in various aspects of life, including work, driving, and personal safety. In contrast, being lethargic, apathetic or indifferent can lead to negative outcomes in various situations.