alertness

Noun

• lively attentiveness

• a state of readiness to respond
  • alerting was indicated by the desynchronization of the EEG
    

• the process of paying close and continuous attention
  • wakefulness, watchfulness, and bellicosity make a good hunter
    
  • vigilance is especially susceptible to fatigue
    

Related words

• Synonyms: 
  sharp-sightedness , on the qui vive , alerting , watchfulness , wakefulness , vigilance