Savants Reveal Much About Brain's Dormant Capacities

Treffert's first encounter with savant syndrome was in the early 1960s after his residency, when he embarked on two years of service to the state that had subsidized his training. Though not a child psychiatrist, he was assigned to start a children's wing at a Wisconsin state psychiatric hospitals in Oshkosh.

During his time there he was to meet, among the hundreds of children who passed through the unit, a child who had memorized the entire Milwaukee bus system; another who was severely autistic and essentially mute but could put together a 250-piece jigsaw puzzle, picture-side down, in minutes; and another who could state on demand what had happened on any given date in history.

“It was so striking—here were these children and adolescents who had marked disabilities alongside what I came to see later as islands of genius,” Treffert said.

He began to take an avocational interest in the subject. Fascinating as it was, it was too rare to build a career around: approximately 10 percent of persons with autistic disorder and about 1 percent of individuals with other forms of mental retardation or brain injury have some savant skills along a continuum from “splinter skills”—such as memorizing sports trivia or birthdates of friends and relatives—to “talented-level skills” in which music or art are more conspicuous and are above average peer-group skills. Very scarce—fewer than 100 known alive today—are the prodigious savants whose skills would be spectacular even if seen in a nondisabled person.

Treffert became superintendent at the hospital in Oshkosh and served there until 1979. Then he became administrator of a community mental health center in Fond du Lac, a position he occupied for 12 years before he switched to private practice and forensic psychiatry.

The success of “Rain Man” was a turning point—for savant syndrome and for Treffert. He noted that more has been learned about the condition in the 20 years since that movie than had been learned in the previous 100 years after the syndrome was first described in 1887.

Treffert said that a single unifying phenomenon in all savants appears to be one of left-brain damage and right-brain recruitment—most savants are deficient in left-brain skills associated with language and social fluency. He cited what he calls the “Three Rs” of savant syndrome: rewiring, recruitment, and release, the latter referring to the release of right-brain capacities that would normally be dormant.

Moreover, savants typically display their extraordinary skills in five general areas: music, art, mechanical ability, lightening calculation, and “calendar counting,” or the ability to match days with dates.

Also typical is their extraordinary memory—sometimes called “memory without reckoning,” since the savant commonly lacks comprehension of the meaning of their prodigious memories.

Treffert believes this is because there is injury to the higher cortico-limbic circuits used by most people and compensation by the lower-level cortico-striatal circuit for what Treffert calls “habit memory.”

He noted that this process appears to mirror the mental processes employed by geniuses. “There is some overlap among prodigies, geniuses, and savants that may give us some insight into creativity itself, because savants and geniuses use the same sort of subcortical circuitry to do their work,” he said.

For all that has been learned about savants in the last 20 years, some aspects of the condition point still to mysteries of the human brain yet to be discerned. Among these is calendar counting, a feat that savants do not study or learn but seem to know intuitively and that would seem to have no functional utility.

Treffert speculated that it may reflect so-called “genetic memory,” knowledge deeply buried in the brain and passed down from generations ago when seasons and solar and lunar cycles were matters of survival. The notion can find some support in the science of epigenetics, which has revealed the ways that our genetic code can be altered by environment and culture.

“So many savants have this talent of calendar counting; it is almost universal,” he said. “You have to wonder where in the world it came from, because savants seem to know things they never learned. I cannot help wondering if it is knowledge stored from a primitive time when the calendar was a matter of life and death.”

Treffert is retired from psychiatric practice but says he is as busy as ever. He is chair of the Wisconsin State Controlled Substances Board and past chair of the Wisconsin Medical Examining Board, and he remains active in the Wisconsin Medical Society and Wisconsin Psychiatric Association. In his spare time, he tends a seven-acre property, chopping wood and caring for an orchard that includes 40 apricot, peach, apple, plum, pear, and cherry trees.

But his interest in savant syndrome has become a full-time avocation, with media inquiries coming from around the globe. He maintains a Web site with comprehensive information about the condition and fields e-mails from parents and caretakers with children who display islands of talent alongside pervasive disabilities.

Treffert said, “Since the first step in treatment is to make a diagnosis, I try to help steer these family members toward a knowledgeable resource in their area or country so that the underlying disability can be properly diagnosed and treated, and the ability can be nourished and nurtured.”

Treffert's Web site is <www.savantsyndrome.com>.