Transmarginal inhibition
Encyclopedia
In psychology
Psychology
Psychology is the study of the mind and behavior. Its immediate goal is to understand individuals and groups by both establishing general principles and researching specific cases. For many, the ultimate goal of psychology is to benefit society...

, Transmarginal inhibition, or TMI, is an organism's response to overwhelming stimuli.

Research

Ivan Pavlov
Ivan Pavlov
Ivan Petrovich Pavlov was a famous Russian physiologist. Although he made significant contributions to psychology, he was not in fact a psychologist himself but was a mathematician and actually had strong distaste for the field....

 enumerated details of TMI on his work of conditioning
Classical conditioning
Classical conditioning is a form of conditioning that was first demonstrated by Ivan Pavlov...

 animals to pain. He found that organisms had different levels of tolerance. He commented "that the most basic inherited difference among people was how soon they reached this shutdown point and that the quick-to-shut-down have a fundamentally different type of nervous system."

Patients who have reached this shutdown point often become socially dysfunctional or develop one of several personality disorder
Personality disorder
Personality disorders, formerly referred to as character disorders, are a class of personality types and behaviors. Personality disorders are noted on Axis II of the Diagnostic and Statistical Manual of Mental Disorders or DSM-IV-TR of the American Psychiatric Association.Personality disorders are...

s. Often patients who dissociate during and after the experience, will more easily dissociate or shut down during stressful or painful experiences, and may experience post traumatic stress disorder for the remainder of their lives.

Stages

There are three stages passed through for state of TMI to be reached.
  1. equivalent phase: when the response matches the stimuli, which is considered the normal baseline behavior.
  2. paradoxical phase: associated with quantity reversal, occurs when small stimuli receive major response and a major stimuli elicit small responses.
  3. ultra-paradoxical: the final stage, associated with quality reversal in which negative stimulation results in positive responses and vice versa.


Additional research on these phases was done by William Sargant
William Sargant
William Walters Sargant was a controversial British psychiatrist who is remembered for the evangelical zeal with which he promoted treatments such as psychosurgery, deep sleep treatment, electroconvulsive therapy and insulin shock therapy.Sargant studied medicine at St John's College, Cambridge,...

 in his work on shell-shocked servicemen.

An organism can progress through these stages by increased stimulation, random negative stimulation, reversing positive and negative stimulation, or physically debilitating the organism.

As observed by Pavlov, tolerance of stimulation varies greatly between individuals. Highly sensitive persons may be overstimulated by the loud volumes in a movie theater or the background confusion of a large social gathering. Other individuals will find those same stimulations as ideal stimulation levels, or even understimulating.

Use in mental conditioning

The sudden conversion methods of mental conditioning rely heavily on TMI. Of the ten elements of control (environment control, physical fatigue, mental fatigue, tension or uncertainty, confession, superstimulation, crisis, euphoria, proselytization, and restimulation), six can be seen as stimulation toward TMI. Organizations that practice sudden conversion, such as military recruit training
Recruit training
Recruit training, more commonly known as Basic Training and colloquially called Boot Camp, is the initial indoctrination and instruction given to new military personnel, enlisted and officer...

, prison
Prison
A prison is a place in which people are physically confined and, usually, deprived of a range of personal freedoms. Imprisonment or incarceration is a legal penalty that may be imposed by the state for the commission of a crime...

s, and extreme psychiatric treatments, often have individuals enter TMI states which may result in permanent psychological damage.
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