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''Of Two Minds: The Revolutionary Science of Dual-Brain Psychology'' is a book written by the American
psychiatrist A psychiatrist is a physician who specializes in psychiatry, the branch of medicine devoted to the diagnosis, prevention, study, and treatment of mental disorders. Psychiatrists are physicians and evaluate patients to determine whether their sy ...
Fredric Schiffer ( MD degree in 1971) wherein he proposes that each person behaves as if there are two minds within the person, and that by recognizing and relating to the two separate minds, the therapist can promote healing and understanding of problems such as depression, anxiety, addictive behavior and delusional thoughts. The author writes that by "two minds in one person" he means that a "part of an individual ...has a unique set of memories, motivations, and behaviors along side another part of him which has a different unique (though possibly similar) set of memories, motivations and behaviors." (Schiffer 2nd edition, 2021, p.30) The author locates a "mind" in each of the two physical halves (hemispheres) of the brain. and he "maintains that one hemisphere can be more immature than the other and that this imbalance leads to different mental disorders." During his counseling, as an exercise he has his patients cover all of one eye, and the inner half of the other eye, which the author feels selectively stimulates one cerebral hemisphere more than the other – activating the thoughts and feelings of that hemisphere – which allows one to "'talk' to each half of the brain separately, to learn which is less mature, and to bring the two hemispheres into harmony."


Background

In the early 1960s, the team of the neurosurgeon
Joseph Bogen Joseph E. Bogen, M.D. (July 13, 1926 – April 22, 2005) was a neurophysiologist who specialized in split brain research and focused on theories of consciousness. He was a clinical professor of neurosurgery at the University of Southern California, ...
, the neuropsychologist
Roger Sperry Roger Wolcott Sperry (August 20, 1913 – April 17, 1994) was an American neuropsychologist, neurobiologist, cognitive neuroscientist, and Nobel laureate who, together with David Hunter Hubel and Torsten Nils Wiesel, won the 1981 Nobel Prize i ...
, and the "psychobiology" graduate student
Michael Gazzaniga Michael S. Gazzaniga (born December 12, 1939) is a professor of psychology at the University of California, Santa Barbara in the USA, where he heads the new SAGE Center for the Study of the Mind. He is one of the leading researchers in cognitive ...
performed psychological experiments on patients who for medical treatment had undergone "split-brain surgery" which cuts the
corpus callosum The corpus callosum (Latin for "tough body"), also callosal commissure, is a wide, thick nerve tract, consisting of a flat bundle of commissural fibers, beneath the cerebral cortex in the brain. The corpus callosum is only found in placental mam ...
and thus severs the main link between the two sides of the brain known as the
cerebral hemispheres The vertebrate cerebrum (brain) is formed by two cerebral hemispheres that are separated by a groove, the longitudinal fissure. The brain can thus be described as being divided into left and right cerebral hemispheres. Each of these hemispheres ...
. Bogen related that some researchers regard that following the surgery of "splitting of the brain," a "single mind is cut into two but that ...it is abnormal to have two brains," meaning that the surgery creates an artificial situation which does not exist in normal people, but others feel that "every person is born with two brains but because the two sides get along so well, people simply have the illusion of one mind." In his book ''Of Two Minds'' Schiffer "enters the fray" by giving his research findings and implications of his theory of each person having a "dual brain."


Summary and content


Preface

In the preface to the book, the author relates a case from the 1970s where a university student he was counseling for anxiety and depression seemed to display one personality which was "more mature and healthier" and another personality which was "emotionally immature." The author then relates that when he had started to undergo psychoanalysis by
Elvin Semrad Elvin Semrad (1909-1976) was a prominent American psychoanalytic psychiatrist. He was noted for his ability to establish a rapport with deeply troubled individuals. He was one of the most influential teachers of psychotherapy in his time and he had ...
as part of his psychiatric training that the author felt that he too had "two distinct parts."


Introduction

The author writes that in 1995 he read about research by Werner Wittling which described a technique of how a movie could be shown just to one hemisphere in "intact," normal people – meaning in those who had not had "split-brain" surgery. Wittling found that films shown to the right side of the brain "often elicited a stronger emotional and physical response then when shown to the left brain." In what then became a "eureka" moment for Schiffer, he tried to perform a "home version" of Wittling's experiment simply by covering all of one eye, and the inner half of the other eye. Such a covering of the eyes is known to first send what is being seen to the opposite side of the brain; for example, covering all of the right eye and the inner half of the left eye first sends the image seen to the opposite side of the brain, in this case to the right hemisphere. Later that same day, Schiffer tried this method with several of his counseling patients. For the first patient that day, when seeing from only the extreme left, the patient "became a bit agitated and said, 'Oh, my God!' 'What's that?' chiffer said.I chifferhad no idea what he meant. he patient said'I have all my anxiety back.'" And then when covering the eyes so that the patient saw only from the extreme right, the patient immediately felt better.


First three chapters

In the first three chapters, Schiffer discusses more recent "split-brain" studies, and studies in patients with intact brains using "lateralizing" devices (which first show an image to only one hemisphere), as well as other tests to assess brain activity such as the
Wada test The Wada test, also known as the intracarotid sodium amobarbital procedure (ISAP), establishes cerebral language and memory representation of each hemisphere. Method Medical professionals conduct the test with the patient awake. Essentially, th ...
, electroencephalogram (EEG),
PET A pet, or companion animal, is an animal kept primarily for a person's company or entertainment rather than as a working animal, livestock, or a laboratory animal. Popular pets are often considered to have attractive appearances, intelligence, ...
scan and functional MRI scan.


Chapter 4: Dual-Brain Psychology

The author writes that the "aim of dual-brain therapy is to mend the archaic, destructive ideas and emotions of the mind on the troubled side, to teach it that it is safer and more valuable than it learned during some traumatic experience." The author feels that "free association" relates to "feelings or ideas coming from the immature side" of the brain, with the "interpretations" by the analyst as being the "deciphering of the thoughts of the...immature mind," and that "transference" is the "relationship between... heimmature mind and the therapist."


Chapters 5 through 10

In these chapters the author deals with cases of
anxiety Anxiety is an emotion which is characterized by an unpleasant state of inner turmoil and includes feelings of dread over anticipated events. Anxiety is different than fear in that the former is defined as the anticipation of a future threat wh ...
, depression,
post-traumatic stress disorder Post-traumatic stress disorder (PTSD) is a mental and behavioral disorder that can develop because of exposure to a traumatic event, such as sexual assault, warfare, traffic collisions, child abuse, domestic violence, or other threats on ...
(PTSD), "nervous breakdown" (psychotic episode),
cocaine addiction Cocaine dependence is a neurological disorder that is characterized by withdrawal symptoms upon cessation from cocaine use. It also often coincides with cocaine addiction which is a biopsychosocial disorder characterized by persistent use of coc ...
, and the psychological aspects of
heart attack A myocardial infarction (MI), commonly known as a heart attack, occurs when blood flow decreases or stops to the coronary artery of the heart, causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may tr ...
. A feature throughout these chapters is that Schiffer provides transcripts of recordings of counseling sessions as the patient speaks as one side of the visual field is covered, and then the opposite visual field is covered, which Schiffer believes represents the thoughts and feelings of each separate side of the brain as brought out by the selective stimulation of one side of the brain.


Chapter 11

This chapter is a summary of the author's work of "Dual-Brain Psychology" and how to practically apply it to one's own situation. Further case studies are given.


Epilogue

Here, in the first edition of his book from 1998, the author presents other scientific studies which he is planning to perform to evaluate "Dual-Brain Psychology."


2nd edition, published in 2021

In the second edition, published in 2021, the author gives a "Preface to the 2nd Edition" which traces how his work, research and thinking have developed since his original edition twenty-three years earlier. The first and second edition of Schiffer's ''Of Two Minds'' are almost word-for-word the same, but in the second edition there are many minor typographical errors.


Publication

The subtitle for the American edition is "The Revolutionary Science of Dual-Brain Psychology." The subtitle for the British edition is "A New Approach for Better Understanding and Improving Your Emotional Life." Both editions were published by imprints of
Simon and Schuster Simon & Schuster () is an American publishing company and a subsidiary of Paramount Global. It was founded in New York City on January 2, 1924 by Richard L. Simon and M. Lincoln Schuster. As of 2016, Simon & Schuster was the third largest publ ...
. The subtitle for the second edition is simply "Dual-Brain Psychology." The book was also published in a German translation in 2007 by the publisher VAK. The title in German is ''Eine Brille für die Seele: Die neue Dual-Brain-Psychologie und ihre Anwendung bei Ängsten, Konflikten und Belastungen'' ("Glasses for the Soul: The New Dual-brain Psychology and Its Application to Fears, Conflicts and Stress").


Reception

Schiffer writes in the preface to the second edition of his book that his "work was not being widely appreciated by the Academy of scientists," referring to those in academic research and teaching (Schiffer 2nd edition, 2021, p. 8). The first edition received an endorsement from
Candace Pert Candace Beebe Pert (June 26, 1946 – September 12, 2013) was an American neuroscientist and pharmacologist who discovered the opiate receptor, the cellular binding site for endorphins in the brain. Early life and education She was born on June ...
(deceased in 2013), a PhD
pharmacologist Pharmacology is a branch of medicine, biology and pharmaceutical sciences concerned with drug or medication action, where a drug may be defined as any artificial, natural, or endogenous (from within the body) molecule which exerts a biochemic ...
who did research in neuroscience. She wrote that "Dr. Schiffer rivals
Freud Sigmund Freud ( , ; born Sigismund Schlomo Freud; 6 May 1856 – 23 September 1939) was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating pathologies explained as originating in conflicts in ...
in his revolutionary theories on understanding the human psyche." In the second edition, two others are listed as giving their endorsement for the content of the first edition: the neurosurgeon
Joseph Bogen Joseph E. Bogen, M.D. (July 13, 1926 – April 22, 2005) was a neurophysiologist who specialized in split brain research and focused on theories of consciousness. He was a clinical professor of neurosurgery at the University of Southern California, ...
(deceased in 2005) wrote that the book is "wonderfully readable and well-informed, this is the best book ever on the social and psychiatric implications of the split brain research" and
Bessel van der Kolk Bessel van der Kolk (born 1943) is a psychiatrist, author, researcher and educator based in Boston, United States. Since the 1970s his research has been in the area of post-traumatic stress. He is the author of ''The New York Times'' best selle ...
, a psychiatrist known for his work in post-traumatic stress disorder, wrote that Schiffer's book "provides the reader with a lucid exposé of the evolving understanding of the dual mind/brains that we all possess." (Schiffer 2nd edition, 2021, p.3) A significant negative review was published in 1998 in the journal ''Nature'' by Chris McManus, a British physician and neuroscientist specializing in handedness and cerebral lateralization, who basically discounted every main point which Schiffer presented, but the major argument is that Schiffer's theory is an "extension of hemisphericity, the dubious concept...."


See also

*
Dual consciousness Dual consciousness is a theoretical concept in neuroscience. It is proposed that it is possible that a person may develop two separate conscious entities within their one brain after undergoing a corpus callosotomy. The idea first began circulatin ...
*
Lateralization of brain function The lateralization of brain function is the tendency for some neural functions or cognitive processes to be specialized to one side of the brain or the other. The median longitudinal fissure separates the human brain into two distinct cerebra ...
*
Split-brain Split-brain or callosal syndrome is a type of disconnection syndrome when the corpus callosum connecting the two hemispheres of the brain is severed to some degree. It is an association of symptoms produced by disruption of, or interference wit ...
*
Adverse childhood experiences Adverse childhood experiences (ACEs) encompass various forms of physical and emotional abuse, neglect, and household dysfunction experienced in childhood. The harms of ACEs can be long-lasting, affecting people even in their adulthood. ACEs have ...


References


Sources

* {{Citation , last =Schiffer , first =Fredric , year =1998 , title =Of Two Minds: The Revolutionary Science of Dual-Brain Psychology , publisher =The Free Press (Simon & Schuster), isbn =978-0684854243


External links


Article by Fredric Schiffer: "A Dual Mind Approach to Understanding the Conscious Self and Its Treatment" (NeuroSci 2021, 2(2), 224-234; 9 June 2021)

11-minute video: ABC News "20/20" television program featuring work of Fredric Schiffer (October 21, 1998)
Psychology books Neuroscience books Philosophy of mind literature 1998 non-fiction books