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Jessica Steele Western Michigan University A Literature Review of Neurofeedback on the Treatment of Attention Deficit-Hyperactivity Disorder
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A TTENTION D EFICIT -H YPERACTIVITY D ISORDER Inattention, impulsivity and hyperactivity 3–5% of school-aged children in the United States Combined, Predominantly Inattentive, and Predominantly Hyperactive-Impulsive.
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A TTENTION D EFICIT -H YPERACTIVITY D ISORDER Inattention Hyperactivity Impulsivity
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C OMORBID DISORDERS Conduct, mood, anxiety, and tic disorders, Social skill deficits Increased risk for accidental injury Higher incidence of expulsion, substance abuse
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T REATMENT Stimulant Medication Traditional Behavioral Treatment
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T RADITIONAL B EHAVIORAL T REATMENT Consequence-focused Antecedent-focused
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A NTECEDENT - FOCUSED B EHAVIORAL TXT Reducing work to complete Ensuring understanding before beginning task Providing extra time to the student Teaching study and note taking skills
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C ONSEQUENCE - FOCUSED B EHAVIORAL TXT Reinforcement contingencies Response-cost Token Economy
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F AILURES OF T RADITIONAL B EHAVIORAL TXT Many do not respond to behavioral treatments. Difficult to generalize to the different situations Little carryover Problem behaviors return to baseline in 50% of cases.
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S TIMULANT M EDICATION Stimulant Medication to be superior treatment Methylphenidate (MPH) psychostimulant medication
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F AILURES OF S TIMULANT M EDICATION High non-response Negative symptoms return upon termination Does not treat the co-occurring tribulations Side effects occur in 20-50% of individuals
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B RAIN W AVES Delta (1-4 Hz)- relaxation Theta (4-7 Hz)- dreaming/creativity/sociability Alpha (8-11 Hz)- learning/anxiety/inspiration Beta (12-30 Hz)- attention/aggression
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ELECTROPHYSIOLOGICAL ABNORMALITIES Abnormal brain wave characteristics 5 distinct brain wave profiles
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F IVE EEG C LUSTERS Cluster 1 : ADHD combined type more aggressive, mood, and antisocial behaviors. Cluster 2 : age-appropriate, and are not very fearful or antisocial. Cluster 3 : impulsive, inattentive, poor language “Maturation lag” Cluster 4 : “typical” ADHD range of behaviors Cluster 5 : “confused or in a fog” arrange objects, prefer strict routine
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I NTRODUCTION TO N EUROFEEDBACK Behavior highly correlates with subtypes. 1976, 1 st ADHD Neurofeedback sessions Neurofeedback Operant conditioning of brain wave frequencies
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N EUROFEEDBACK Electrodes on the scalp Contingent auditory or visual feedback Theta, Sensorimotor Rhythm (SMR), and beta.
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N EUROFEEDBACK ( CONTINUED ) Software plays movies or videogames Example: High theta/ low beta
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N EUROFEEDBACK ( CONTINUED ) Brain adapts to the consequences Thresholds increase in difficulty Goal: Increase sensitivity to levels of arousal
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N EUROFEEDBACK (C ONTINUED ) Improves attention/behavioral problems Improves scores on intelligence tests Increases academic achievement Closely comparable to medication
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N EUROFEEDBACK C OMPARED TO A LTERNATIVES Long term affects Strehl (2006) No documented adverse side effects. (Hypothesized ideas of inducing seizures through Neurofeedback, but there has never been a documented instance) No adverse side effects
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I N S UMMARY Equally significant results compared to stimulant medication No side effects Individualistic approach when compared to medication Future topics of research
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References are available upon request
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