| / English Dictionary |
ALERTNESS
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Lively attentiveness
Synonyms:
alertness; on the qui vive; sharp-sightedness
Classified under:
Nouns denoting attributes of people and objects
Hypernyms ("alertness" is a kind of...):
attentiveness (the trait of being observant and paying attention)
Derivation:
alert (engaged in or accustomed to close observation)
Sense 2
Meaning:
The process of paying close and continuous attention
Example:
vigilance is especially susceptible to fatigue
Synonyms:
alertness; vigilance; wakefulness; watchfulness
Classified under:
Nouns denoting cognitive processes and contents
Hypernyms ("alertness" is a kind of...):
attention (the faculty or power of mental concentration)
Hyponyms (each of the following is a kind of "alertness"):
jealousy (zealous vigilance)
Derivation:
alert (mentally perceptive and responsive)
Sense 3
Meaning:
A state of readiness to respond
Example:
alerting was indicated by the desynchronization of the EEG
Synonyms:
alerting; alertness
Classified under:
Nouns denoting stable states of affairs
Hypernyms ("alertness" is a kind of...):
arousal (a state of heightened physiological activity)
Context examples:
The disease may cause a wide range of symptoms, including: • Changes in alertness and attention • Hallucinations • Problems with movement and posture • Muscle stiffness • Confusion • Loss of memory
(Lewy Body Disease, NIH: National Institute of Neurological Disorders and Stroke)
A condition marked by drowsiness and an unusual lack of energy and mental alertness.
(Lethargy, NCI Dictionary)
Caffeine increases brain activity, alertness, attention, and energy.
(Caffeine, NCI Dictionary)
A type of drug that increases the levels of certain chemicals in the brain and increases alertness, attention, energy, and physical activity.
(Central nervous system stimulant, NCI Dictionary)
The increase in synaptic concentrations of these catecholamines causes behavioral changes including euphoria, an increase in mental alertness and excitement, and suppresses appetite.
(Benzphetamine, NCI Thesaurus)
About his body there was a peculiar springiness, or resiliency, almost catlike, and a quick alertness as of one who lived in perpetual fear of things seen and unseen.
(The Call of the Wild, by Jack London)
The Crofts took possession with true naval alertness, and were to be visited.
(Persuasion, by Jane Austen)
Physiological effects include an increase in motor activity, euphoria, increased mental alertness, excitatory behavior, and appetite suppression.
(Amphetamine Aspartate, NCI Thesaurus)
With sustained use, the effects of tachycardia and enhanced alertness diminish while psychotoxic effects such as hallucinations and delusions may occur.
(Amphetamine, NCI Thesaurus)
Blue light boosts alertness and regulates our internal body clock, or circadian rhythm, that tells our bodies when to sleep.
(Artificial Light of Digital Devices Lessens Sleep Quality, The Titi Tudorancea Bulletin)
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