• Specialty
  • Cardiology
  • Dentistry
  • Dermatology
  • General Medicine
  • GI/GU
  • Hematology
  • Immunology
  • Lab Medicine & Pathology
  • Neuro-Psych
  • OB-Gyn
  • Oncology
  • Ophthalmology
  • Orthopaedic
  • Otolaryngology - ENT
  • Radiology
  • Surgery

• Neuro-Psych
  • Lots of Neuro-Psych Terms
  • Alzheimer�s Disease Terms
  • Brain Injury Terms
  • Consciousness Levels
  • Cranial Nerves (I-XII)
  • Depression Related Terms
  • Glasgow Coma Scale
  • Mental Health Related Terms
  • Neuro/Psych Medications
  • Phobias
  • Psychiatric Interviews & Examinations
  • Sleep Related Abbreviations
  • Sleep Related Terms
  • Suicide Related Terms
  • Tumors - Neuro
  • Sample Reports - Neurosurgery
  • Sample Reports - Sleep Medicine
  • Sample Reports - Psychiatry / Psychology
  • Sample Reports - Neurology

• Depression Related Terms

- N -

• Narcotic Drugs

Substances such as morphine that lead to increasing tolerance and physiological dependence.



• Negative Automatic Thoughts

Negative thoughts about the self and the future that occur automatically and often just below the surface of conscious awareness.



• Negative Cognitive Triad

Negative thoughts about the self, the world and the future.



• Nervous

Used to describe the experience or feeling of anxiety, also used to describe the 'nervous system' of the human body as studied in neurology.



• Nervous Disease

An old name for any anxiety or panic disorder.



• Nervous Exhaustion

An old name for any anxiety or panic disorder.



• Nervous Heart

An old name for any anxiety or panic disorder.



• Neurology

The field of medicine primarily concerned with the study of disorders of the brain and nervous system.



• Neuron

An individual nerve cell.



• Neurosis

An old term used to describe any anxiety, depressive, or obsessive compulsive disorder.



• Neurotic Behavior

Behavior that is driven and anxiety and involves extreme avoidance.



• Neuroticism

A style of behavior characterized by anxiety, anger, hostility, depression, self-consciousness, impulsiveness, and vulnerability.



• Neurotransmitter

A chemical substance that transmits information from one neuron to another neuron at a very short distance. Neurotransmitters are released by nerve cells into the extracellular space at synapses. The release of neurotransmitter then produces either excitation or inhibition of an immediately neighboring nerve cell. Many substances act bothas hormones in the blood and neurotransmitters in either the central or peripheral nervous systems. Neurotransmitters in the brain can be generally divided into two large classes. Classical neurotransmitters, such as norepinephrine, are synthesized in nerve terminals close to the synapse, whereas the neuropeptide neurotransmitters, such as the endorphins, are synthesized in body of the nerve cell.



• Nicotine

The addictive alkaloid that is the main active ingredient in tobacco. May have an antidepressant as well as an addictive effects.



• NIH

National Institute of Health (United States).



• NIMH

National Institute of Mental Health (United States).



• Nocturnal Bruxism

Term used to describe the clenching and/or grinding of teeth during sleep.



• Noradrenaline

See norepinephrine.



• Norepinephrine (NORADRENALINE)

A hormone and neurotransmitter (catecholamine) that is produced by the adrenal gland and is involved in a variety of functions including (sympathetic) arousal.



• Normal Distribution

The tendency of most people to cluster around central point or average when measured on any given trait or behavior, with the remaining people more spread out towards the two extremes.



• NREM

Sleep that is not characterized by rapid eye movements (REM).