CATALYTIC CONVERTER FAILURES: If a catalytic converter needs replacing, one of the problems below most likely contributed to its failure. Engine Tune-Up Required. A number of problems could occur to the catalytic converter as the result of an engine that is out of tune.
View Full Document. - Habituation : refers to gradual reduction in the strength of a response due to repetitive stimulation.
repeated or constant stimulation decreases the number of sensory messages sent to the brain, which causes decreased sensation gate-control theory theory that pain sensations are processed and altered by mechanisms within the spinal cord