Alpha-theta The Addicted Brain Drug abuse produces long-term changes in the reward circuitry of the brain
Electrical stimulation of brains (ESB) Electrical stimulation of brains of rats - James Olds in 1950s; –Jacobsen and Torkildsen replicated work in humans; –some epileptics stimulated themselves into convulsions
INTRA-CRANIAL SELF- STIMULATION Rodent wireheads – amperes for less than a second whenever rat pushed lever –Rates of up to 10,000 bar-presses an hour recorded –Medial forebrain bundle passing through lateral hypothalamus and ventral tegmentum –An animal will self-stimulate for more than 24 hrs continuously without rest, and will cross electrified grid to gain access to lever –Other brain centers are aversive, such as periaqueductal grey matter (PAG)periaqueductal –Ventral tegmental area (VTA) neurons manufacture dopamine and they are under continuous inhibition by gamma-aminobutyric acid (GABA) system, an important component of the ”final common pathway" of reward, implicated in addiction, mood, and learning.VTAdopamineGABA
Delgado, Primate wireheads, and Circuitry man
Prevalence
Lifetime Rates by Gender DisorderMalesFemalesTOTAL (%) Anxiety disorder Unipolar Depression Mania Substance dependence Any disorder
Alpha-Theta Training Peniston & Kulkosky (1989) –Alpha activity deficits in alcoholics known since 1940s –Drinking produces rewarding slow waves (alpha) –Normal state has much more high beta –Teach alcoholics to produce alpha without drinking
Peniston Protocol Hand-warming primed EEG biofeedback techniques Guided visual imagery during Alpha-Theta training, especially addict behavior rejecting O1 site used (Pz by W. Scott) Goal is crossover state: high theta state associated with reverie, disidentification with ego self Results: Alcoholism & PTSD: very low relapse rate, <20% 9 years out Chemical addicts, ½ relapse rate 18 months out (Kaiser & Scott, 1999)
Scott & Kaiser, 1999
MMPI (Minnesota MultiPhasic Inventory) Hypochondriasis (Hs) - neurotic concern over bodily functioning Depression (D) - symptomatic depression. Hysteria (Hy) - hysterical reactions to stress situations Psychopathic Deviate (Pd) - psychopathy, asocial, amoral Masculinity-Femininity (Mf) - originally developed to identify homosexual invert males, now those who reject traditional gender roles. Paranoia (Pa) - paranoid symptoms Psychasthenia (Pt) - excessive doubts, compulsions, obsessions, and unreasonable fears (OCD). Schizophrenia (Sc) - identify schizophrenia Hypomania (Ma) - hypomanic disturbances Social Introversion (Si) - person's tendency to withdraw from social contacts and responsibilities.
MMPI – Derived Empirically Developers used every personality question they could find 1. Tested on various clinical groups (depressive, schizophrenics, etc.) 2. Large pool of questions 3. Kept only those questions that discriminated between groups
MMPI (Minnesota MultiPhasic Inventory) Validity Scales: "Cannot Say" scale – 30+ omitted items invalidates test L Scale – Lie scale - not willing to admit even minor shortcomings. F Scale - detect atypical ways of responding to test items. K Scale – detect subtle attempts at denying psychopathology or, conversely, at exaggerating psychopathology; overall defensiveness
Scott & Kaiser, 1999
Kaiser & Othmer, 199?
Substance Abuse Study Outcome William Scott, Thomas Brod, MD, Stephen Siderof Ph.D., David Kaiser, Ph.D., Meredith Sagan, MD. (2002) Crack, Cocaine, Methamphetamine, Heroin All participants in 12-step inpatient program Control group n=61 Experimental group n=60 –40-session EEG biofeedback added to 12 step program Compared abstinence rates, psychometric measures –UCLA HSPC approved the study design 12 month post study (those who completed): –36 of 47 experimental subjects were abstinent –12 of 27 control subjects were abstinent –Experimental subjects stayed in treatment significantly longer (p< 0.005) compared to the control group This confirmed and extended earlier studies
Royal Conservatory of Music Improvement in Musical Performance Dr. John Gruzelier, Ph.D, Tobias Egner, Ph.D. Department of Cognitive Neuroscience and Behavior, Imperial College, London, 2003, Neuroreport. –Subjects: top music students –Goal: could training show measurable improvement in performance 15 minute musical performance assessed prior and subsequent to training. Performances were video-recorded, randomized and rated by expert musicians external to the Royal College of Music. Six groups created – each with different training: 1)Alexander Technique 2) Mental skills 3) Beta NF 2)4) SMR NF 5) Alpha-Theta NF 6) Exercise
Alpha-Theta neurofeedback group had significant change in musical improvements Overall Quality ( %, p =.06) Musical Understanding ( %, p <.01) Stylistic Accuracy ( %, p <.01) Interpretative Imagination (+ 17 %, p <.01) Study since replicated