Repetitive Behavior in Neurodevelopmental Disorders: Clinical and Translational Findings.
Repetitive behavior may stem from a stuck cortical-basal ganglia loop, so enrich the environment before you target the topography.
01Research in Context
What this study did
The authors read every paper they could find on repetitive behavior. They looked at autism, Fragile X, and other brain-based disorders. They wrote a big-picture story about why the behaviors stick around and what might help.
What they found
Repetitive behavior may come from one core problem: the brain gets stuck in a rut. Enriched rooms with toys, sounds, and people can loosen the rut. Drugs that calm the cortical-basal ganglia loop are also on the horizon.
How this fits with other research
Baranek et al. (2005) asked behavior analysts to buddy up with brain scientists. Perez et al. (2015) answer that call by showing how brain circuits point to new treatments.
Fine et al. (2005) and Austin et al. (2005) show habit reversal helps tics. Perez et al. (2015) widen the lens: the same basal-ganglia path could guide treatment for all repetitive acts, not just tics.
Kuenssberg et al. (2011) say the old autism triad may be wrong. Perez et al. (2015) give a new umbrella: inflexibility links repetitive and social issues, so one treatment plan may hit both.
Why it matters
You now have a brain-based reason to enrich the room before you try to stop the behavior. Add lights, textures, or peer buddies first. Then watch if the repetitive behavior loosens on its own. If it does, you can save hours of extinction trials and maybe skip extra meds.
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02At a glance
03Original abstract
Repetitive behavior refers to a highly heterogeneous set of responses associated with a wide range of conditions, including normative development. Treatment studies for aberrant repetitive behavior are limited although one promising approach involves conceptualizing such behavior as a generalized inflexibility or lack of variability in responding. Relatively little is known about the neurobiological mechanisms that mediate the development and expression of repetitive behavior, information critical to the design of effective pharmacotherapies, early interventions, and prevention strategies. We will review clinical findings in repetitive behavior as well as findings from animal models highlighting environmental factors and the role of cortical-basal ganglia circuitry in mediating the development and expression of these behaviors. Findings from animal models have included identification of a specific neural pathway important in mediating repetitive behavior. Moreover, pharmacological studies that support the importance of this pathway have led to the identification of novel potential therapeutic targets. Expanding the evidence base for environmental enrichment-derived interventions and focusing on generalized variability in responding will aid in addressing the broader problem of rigidity or inflexibility.
The Behavior analyst, 2015 · doi:10.1212/WNL.54.12.2224