On this Page: 1  The significance of Mercury Retrograde. 2  Indicators in the charts of people especially sensitive to the Mercury Retrograde cycle. 3  How this Mercury Retrograde cycle affects each sign of the zodiac.
The H-reflex (or Hoffmann's reflex) is a reflectory reaction of muscles after electrical stimulation of sensory fibers (Ia afferents stemming from muscle spindles) in their innervating nerves (for example, those located behind the knee).fter about 5 days in zero gravity, for instance in orbit around Earth, the h-reflex diminishes significantly. It is generally assumed that this is due to a marked reduction in the excitability of the spinal cord in zero gravity.
The cough reflex has both sensory (afferent) mainly via the vagus nerve and motor (efferent) components.Pulmonary irritant receptors (cough receptors) in the epithelium of the respiratory tract are sensitive to both mechanical and chemical stimuli.he reflex is impaired in the person whose abdominals and respiratory muscles are weak. This problem can be caused by disease condition that lead to muscle weakness or paralysis, by prolonged inactivity, or as outcome of surgery involving these muscles.