Alertness

n.

1.

The quality of being alert or on the alert; briskness; nimbleness; activity.

Noun	1.	alertness - the process of paying close and continuous attention Synonyms: vigilance, watchfulness
	2.	alertness - a state of readiness to respond; "alerting was indicated by the desynchronization of the EEG" Synonyms: alerting
	3.	alertness - lively attentiveness Synonyms: on the qui vive

alerting, arousal