Definition. Bronchospasm is an abnormal contraction of the smooth muscle of the bronchi, resulting in an acute narrowing and obstruction of the respiratory airway. A cough with generalized wheezing usually indicates this condition. Bronchospasm is a chief characteristic of asthma and bronchitis.Description. Bronchospasm is a temporary narrowing of the bronchi (airways into the lungs) caused by contraction of the muscles in the lung walls, by inflammation of the lung lining, or by a combination of both.This contraction and relaxation is controlled by the autonomic nervous system.efinition. Bronchospasm is an abnormal contraction of the smooth muscle of the bronchi, resulting in an acute narrowing and obstruction of the respiratory airway. A cough with generalized wheezing usually indicates this condition. Bronchospasm is a chief characteristic of asthma and bronchitis.
Mental illnesses are among the most common causes of hallucinations. Schizophrenia, dementia, and delirium are a few examples. Substance abuse is another fairly common cause. Some people see or hear things that arenât there after drinking too much alcohol or taking drugs like cocaine or PCP.
For example, visual or auditory hallucinations are associated with increased activity in the visual and auditory regions of the brain, respectively, and can be induced by electrical stimulation, during, for example, presurgical evaluation of epileptic patients.is findings, which are published in the September issue of the journal Cortex, provide a new theoretical understanding of what happens in the brain during a hallucination. Theories about how hallucinations occur can be broadly divided into two categories.