Self-Injurious Behavior Inhibiting System

The Self-Injurious Behavior Inhibiting System (SIBIS) is an apparatus designed to reduce self-injurious behavior (SIB) directed at the head, such as banging the head against walls and other objects or hitting oneself in the head. Invented by Dr. Robert E. Fischell, Glen H. Fountain, and Charles M. Blackburn in 1984, the device is able to detect instances of head-directed SIB, and delivers an aversive electric shock contingent on its occurrence.[1] The United States Food and Drug Administration banned the device in 2020 as part of a larger blanket ban on devices that use electric shocks to modify behavior without the consent of the user. Other devices covered by this ban include the Graduated Electronic Decelerator.[2]

Effectiveness and Safety

The United States Food and Drug Administration (FDA) has concluded that aversive conditioning devices like the SIBIS pose an "unreasonable risk of harm" and are less effective than positive behavior support alone. While some studies appear to support their efficacy, these studies do no meet modern standards of evidence. Newer and better designed studies find more risks and fewer benefits.[3] The FDA states that such devices may cause both physical and psychological harm, including: depression, anxiety, worsening of self-injurious behavior, PTSD, burns, and pain.[4]

Design

There are two models of SIBIS. The simpler model consists of an electrode and a radio transmitter wrapped around the arm or leg using Velcro.[5] When a child administers a blow to the head, the SIBIS device is used to recognize the self-injurious behavior. This is possible because the SIBIS device is composed of two wirelessly connected parts: the "sensor module" and the "stimulus module".[1] The impact monitor serves to both detect an impact to the head and to protect the head from the damage that the impact could potentially incur. The sensor module is placed on either the body part receiving the impact (such as the head) or on the body part delivering the impact (such as the arm or knee). Wherever it is placed, the sensor module senses the impact of the blow and sends out an electrical signal. This electrical signal triggers the stimulus module, allowing for the aversive stimulation, the shock, to be delivered.

Specifications

SIBIS is designed to reduce SIB by immediately delivering positive punishment when head-directed SIB occurs. Only 5 cm × 3 cm × 1 cm in size,[6] the stimulus module delivers an 85 V electrical shock at 3.5 mA of current to the subject each time the patient strikes his or her head sufficiently hard enough to register on the velocity impact detector.[7] The delivered shock is designed not to be very painful, but rather an uncomfortable response to the SIB. The impact detector of the apparatus can be adjusted, allowing for the reduction of punishment over time and the eventual dismissal of the apparatus from the child's punishment schedule.[6]

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See also

Behaviorists

References
  1. "Archived copy". Archived from the original on 2011-06-12. Retrieved 2009-12-03.CS1 maint: archived copy as title (link)
  2. "FDA Bans 'Aversive' Shock Treatment". www.medpagetoday.com. 2020-03-04. Retrieved 2020-08-08.
  3. "Banned Devices; Electrical Stimulation Devices for Self-Injurious or Aggressive Behavior". Federal Register. 2020-03-06. Retrieved 2020-08-16.
  4. "FDA proposes ban on electrical stimulation devices intended to treat self-injurious or aggressive behavior". FDA. April 22, 2016. Retrieved 7 May 2016.
  5. Kix, Paul (July 2008). "The Shocking Truth". Boston Magazine. Retrieved 3 September 2015.
  6. Linscheid, T.R., Iwata, B.A., Ricketts, R.W., Williams, D.E., & Griffin, J.C. (1990). Clinical evaluation of the self-injurious behavior inhibiting system (SIBIS). Journal of Applied Behavior Analysis, 23, 53–78. doi:10.1901/jaba.1990.23-53
  7. Salvy, S., Mulick, J., Butter, E., Bartlett, R.K., & Linscheid, T.R. (2004). Contingent electric shock (SIBIS) and a conditioned punisher eliminate severe head banging in a preschool child. Behavioral Interventions, 19, 59–72. doi:10.1002/bin.157
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