Alert state

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The phrase alert state is used in more than one professional discipline.

National defense[edit]

The phrase alert state is used in milieu variously, although in a capitalized form the reference is of an indication of the state of readiness of the armed forces for military action or a State against terrorism or military attack. The term frequently used is on High Alert [1] Examples are the DEFCON levels of the US armed forces, probably indicating some degree within DEFCON:2 to DEFCON:4, possibly DEFCON:1 classified with the words as high alert.[2]

The British government's UK Threat Levels, probably including the highest three levels of five, these being classified as substantial, severe and critical.[3] Both highest positions within the classification are synonymous with red alert. All these rely on an understanding of the word alert, which is also originally relevant to a type of military activity, within the earliest recorded usage.[4]


In the context of the Mental status examination, the state of consciousness of an alert person is classified apart from either lethargic or hyper-alert,[5] elsewhere an alert person is capable of providing the correct information when asked their name, their present location and the date, or otherwise is able to talk normally.[6][7] Altogether the relaxed and alert state of mind of the meditator[8] is scientifically classified as brainwaves of the alpha and beta description respectively.[9] The beta state that corresponds to the prior description is, in fact, within the range of 12 to 15 Hz (& 15–19 Hz).[10]


The phrase is in use within environmental considerations,[11][12][13] and also is in usage as a term of change within a system generating electrical energy.[14]

See also[edit]


  1. ^ U.S. Military on 'High Alert' [Retrieved 2013 April 12]
  2. ^ R. van Dijk Encyclopedia of the Cold War, Volume 1
  3. ^ Home Office Terrorism and national emergencies [Retrieved 2013 April 12] Archived 2013-07-29 at the Wayback Machine.
  4. ^ Douglas Harper Online Etymology Dictionary: alert [Retrieved 2013 April 12]
  5. ^ Psychiatry Clerkship [Retrieved 2013 April 12]
  6. ^ R. Elling, K. M. Elling Principles of patient assessment in EMS [Retrieved 2011-12-28]
  7. ^ The Initial Assessment [Retrieved 2013 April 12]
  8. ^ R. Jevning, R.K. Wallace, M. Beidebach The physiology of meditation: A review. A wakeful hypometabolic integrated response Neuroscience & Biobehavioral Reviews Volume 16, Issue 3, Autumn 1992, Pages 415-424 doi:10.1016/S0149-7634(05)80210-6 [Retrieved 2011-12-28]
  9. ^ N. Herrmann The whole brain business book (334 pages) McGraw-Hill Professional ISBN 0-07-028462-8 [Retrieved 2011-12-28]
  10. ^ J. Robbins scholar.googleusercontent Wired for miracles?[permanent dead link] page 4, Psychology Today, May/Jun 98 [Retrieved 2011-12-28][dead link]
  11. ^ [Retrieved 2011-12-28] Archived 2012-04-26 at the Wayback Machine.
  12. ^ thejakartapost [Retrieved 2011-12-28] Archived 2012-01-18 at the Wayback Machine.
  13. ^ World Health Organization - [Retrieved 2011-12-28] Archived July 26, 2010, at the Wayback Machine.
  14. ^ Commission Electrotechnique Internationale Operating states of electric power systems [Retrieved 2013 April 12]

External links[edit]