Галабурда Кирилл Евгеньевич : другие произведения.

Neurological Damage from Child Sexual Abuse

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    About changes in the brains of the "victims of child sexual abuse".

  NEUROLOGICAL DAMAGE FROM CHILDHOOD SEXUAL ABUSE, BY CYRIL E. GALABURDA
  
  The medicine of the 19th century proved that masturbation had a deleterious effect on the child's brain development. "In France", f.i., "Dr Christian expressed the opinion in 1881 that masturbating children would certainly lose their brains, their health and their life" (Aron & Kempf, 1978). "In Great Britain the physician W.C. Ellis wrote in 1838: "The most spread cause of idiocy is the brain and the nervous system weakening based on the harmful habit of onanism"" (Stengers & van Neck, 1998).
  
  Modern medicine proves the same is caused by sex, not by onanism. The victims "of" childhood sexual "abuse" (CSA) are said to have electro-encephalographic (EEG) abnormalities in their brains like "paroxysmal events, asymmetries, and/or regions of focal slowing" in the left hemisphere (Ito et al., 1993) and "temporal lobe epilepsy" (Teicher, 2000), "left hemisphere alpha hypercoherence (showing the left hemisphere cells to be undifferentiated) and right hemisphere theta hypercoherence" (Ito et al., 1998; Black et al., 2002), "non-verbal learning disabilities" (Navalta et al., 2006) "implying left hemisphere (cortical) underdevelopment" (Ito et al., 1993) or "a reduced corpus callosum area" (Teicher et al., 1997; Teicher et al., 2004; de Bellis, Keshavan et al., 1999; de Bellis, Keshavan, Shifflett, Iyengar, Beers et al., 2002), "abnormal T2 relaxation time in the cerebellar vermis" (Anderson et al., 2002), "larger amygdala volumes" (de Bellis, Keshavan, Shifflett, Iyengar, Dahl et al., 2002) and "significantly larger pituitary glands" (Thomas & de Bellis, 2004) to produce (through corticotripin-releasing hormone) more glucocorticoid hormone needed for stress reactions (de Bellis et al., 2011; de Bellis & Zisk, 2011), also "reductions in grey matter (GM) volume of the frontal cortex" (Andersen et al., 2008) and "(the) decreased hippocampal volume" (Bremner et al., 1997; Stein et al., 1997; Driessen et al., 2000; McEwen & Magarinos, 2001; Vythilingam et al., 2002; Sapolsky, 2000) where neurons are supposed to be killed by excessive glucocorticoid (Sapolsky et al., 1990; Gunnar & Nelson, 1994; McEwen & Magarinos, 2001).
  
  However, later research has disproved some of these findings. Cohen's d-s showed a CSA and a control groups had almost the same performance/verbal IQ (intelligence quotient) difference, "there were no epileptiform events in any of the records of either group", and "the CSA group did not exhibit increased connectivity in the right hemisphere in the theta band or in the left hemisphere in the alpha band when compared to the non-CSA group" (Black, 2005). ANOVA and multiple regression analysis "did not show a difference for left or right amygdala volume between childhood abuse patients and controls" (Bremner et al., 1997; Andersen et al., 2008). Talking about "left hemisphere underdevelopment" (Ito et al., 1993), "several well-controlled studies have failed to replicate these findings in acutely traumatized children" (Bonne et al., 2001) and "did not find the predicted decrease in hippocampal volume" (de Bellis, Keshavan et al., 1999; de Bellis, 2001; de Bellis et al., 2001; Bonne et al., 2001; Carrion et al., 2001; de Bellis, Keshavan, Shifflett, Iyengar, Beers et al., 2002).
  
  In order to resolve such contradictions it is speculated that "subcortical gray matter structures that include the limbic system" outgrow and "mask any effects of traumatic stress in maltreated children", or that these effects are "dampened" by alcohol abuse, which the adolescent victims "of" CSA are especially subjected to (de Bellis, 2001). But why GM growing doesn't mask those "reductions in GM volume"? And why the "adolescent onset (of) alcohol abuse" must have any effect on left hemisphere differentiation that continues only for the first three to six years of life (Ito et al., 1998)? It is said the "left hippocampal volume was significantly reduced, but the right hippocampus was relatively unaffected" (Bremner et al., 1997; Stein et al., 1997) though alcohol must "be neurotoxic to the hippocampus" in the right hemisphere too. Moreover, in one study "there was no correlation within the childhood abuse patients between left or right hippocampal volume and years of alcohol... abuse", and "there was no significant correlation between years of alcohol abuse and left or right hippocampal volume in the group as a whole" (Bremner et al., 1997).
  
  I can offer a better explanation: all existing studies of CSA-related neurological damage have been externally and internally invalid.
  
  If "Andersen et al. (2008) reported that frontal cortex GM volume... of the maltreated subjects" having "current and/or past psychiatric diagnoses" (Hart & Rubia, 2012), it doesn't mean the frontal cortex GM volume is abnormal in the "maltreated" subjects that have never had any psychiatric diagnoses. "Browne & Finkelhor (1986) noted that only a minority of both sexually abused (SA) children seen by clinicians and adults with a history of CSA show serious disturbance or psychopathology", and there is "a large percentage of asymptomatic persons with a history of CSA" (Rind et al., 1998). The frontal cortex GM volume abnormalities are not generalisable to the latter.
  
  Also medial prefrontal hyporesponsivity and amygdaloid hyperresponsivity (Bremner, Narayan et al., 1999; Bremner, Staib et al., 1999; Lanius et al., 2002; Shin et al., 1999; Shin et al., 2004; Shin et al., 2001), "smaller intracranial, cerebral cortex, prefrontal cortex, prefrontal cortical white matter, and right temporal lobe volumes,.. decreased areas of the corpus callosum and subregions two, four, five, six, and seven, and larger frontal lobe cerebrospinal fluid volumes(, smaller) total brain volume" (de Bellis, Baum et al., 1999; de Bellis, Keshavan, Shifflett, Iyengar, Beers et al., 2002), "enlarged right, left, and total lateral ventricles" (de Bellis, Baum et al., 1999) with the pituitary gland (Thomas & de Bellis, 2004), and "smaller left hippocampal volume relative to the matched controls" (Bremner et al., 1997; Stein et al., 1997; Bremner, Southwick & Charney, 1999; Driessen et al., 2000; Vythilingam et al., 2002) have been found only in the victims "of" CSA diagnosed with post-traumatic stress disorder (PTSD). The two thirds of the SA group demonstrating "left hemisphere alpha hypercoherence" have PTSD (Ito et al., 1998). Nevertheless, we know that 10% to 58% of the clinically referred victims "of" CSA have no PTSD (Dubner & Motta, 1999; Lipschitz et al., 1999; McLeer et al., 1994), and all those neurologic data are not valid for them. F.i., "medial prefrontal cortical dysfunction is seen in adults with PTSD, but not in traumatized adults without PTSD (Bremner, Narayan et al., 1999; Shin et al., 1999; Shin et al., 2004)." Can they be called traumatized then?
  
  PTSD could develop after that neurological damage because "Gilbertson et al. (2002) found that non-trauma exposed monozygotic twins of subjects with combat-related PTSD had reduced hippocampal volume, which strongly suggests that reduced hippocampal volume may be a risk factor for the development of chronic PTSD, rather than a consequence of trauma exposure and PTSD."
  
  How to summarize these data? Some "victims of CSA" don't suffer neurological damage, another victims do (and develop PTSD just then). It is quite possible for neurological damage to develop independently of CSA (Rind et al., 1998), even precede CSA (Davies, 1979).
  
  Often CSA-related neurological damage has been discovered without statistical control for non-sexual abuse. The "smaller measurements of the corpus callosum and a trend for smaller total brain volume... with smaller intracranial volume (and bigger) ventricular volume" were found in SA children that at least had witnessed domestic violence (de Bellis, Baum et al., 1999). "A 12% smaller left hippocampal volume" was found in "adult survivors of severe childhood physical and/or sexual abuse" (Bremner et al., 1997). "Among patients who had been abused, abnormal EEG findings were observed in... 60% of the sample with a reported history of physical abuse, sexual abuse, or both; and 72% of the sample in which serious physical or sexual abuse had been documented" (Teicher, 2000). The EEG abnormalities like the forgoing "paroxysmal events, asymmetries, and/or regions of focal slowing" and "substantially better performance than verbal (IQ) scores implying left hemisphere underdevelopment" were found only in the victims "of verified physical and/or sexual abuse" (Ito et al., 1993). Of course, the victims "of" CSA that have never been physically abused and have never witnessed domestic violence show neither neuroanatomic, nor EEG abnormalities.
  
  One may reject that statistical controlling for child physical abuse has still revealed "abnormal T2 relaxation time in the cerebellar vermis" (Anderson et al., 2002), "temporal lobe epilepsy" (Teicher, 2000), "left hemisphere underdevelopment" (Ito et al., 1998; Navalta et al., 2006), reduced GM, corpus callosum and hippocampal volume (Andersen et al., 2008; Vythilingam et al., 2002) in the victims of CSA, but anyway they've been subjected to "forced contact sexual abuse... in which the subject was forced against her will" (Navalta et al., 2006), to "forced involuntary contact... accompanied by threats of harm to self or others, or feelings of fear or terror" (Anderson et al., 2001; Andersen et al., 2008), "accompanied by force, coercion, or distress" (Ito et al., 1998), and, generally speaking, for these studies "CSA is defined as coercive or unwanted" (Blanco et al., 2014). No research of CSA has ever been controlled for psychological abuse - like psychological abuse during so-called secondary victimization when "traumatized children are prone to experience novel stimuli, including rules and other protective interventions, as sources of threat, they easily respond to their teachers and therapists as perpetrators (Streeck-Fischer & der Kolk, 2000)." Nevertheless, if there is no "caregiver" to "provide them with a sense of mastery" and if CSA is really wanted by children it does not harm their brains anyhow.
  
  Lots of people don't believe that children may want to be sexually "abused" (Navalta et al., 2006) but children are sexual beings indeed. 85% of CSA cases are neither coercive, nor forced (Lanyon, 1986), in more than 64% children participate (Virkkunen, 1981), in more than 40% children are initiators (Mohr et al., 1964; Rossman, 1976; Bernard, 1982; Kilpatrick, 1992). More than a half (54%) of 12-year-olds who reported sexual contacts with an adult described it as a positive experience (Lahtinen et al., 2014), "but less than half of (15-years-olds reporting such contacts) perceived these experiences as sexual abuse" (Helweg-Larsen & Larsen, 2006).
  
  Sex that is wanted by children is on no account abusive and has no more deleterious effects on their brain development than does onanism. On the contrary, the brain and the skin develop from the same germ layer, and the brain develops only when the skin is stimulated through groping (Norlik, 2013). Being sexually "abused" in childhood is inevitable yet, because "up to 50% of women have experienced sexual arousal while breastfeeding - and 8% admitted to having orgasms" (Moorhead, 2016; Polomeno, 1999; Downey, 2014; Griffiths, 2016; Silverberg, 2017). Such "abusive" reactions are not incidental since they make the mother's nipples erect, and "the observed increase in nipple length due to stimulation may lead to more effective sucking and even more stimulation for mother" to produce more milk (Martinson, 1994).
  
  What happens when children are "protected" from sexual "abuse"? Like in America where a mother was imprisoned for telling her neighbour about being sexually aroused during breastfeeding (Goodyear-Smith, 1993)? Comparisons of rats handled and non-handled by their mothers as pups have "demonstrated significant and tissue-specific differences in (brain) glucocorticoid receptor binding capacity as a function of handling... It seems that the increase in glucocorticoid receptor sites in the hippocampus is a critical feature for the handling effect" (Francis et al., 1996). "Plotsky & Meaney (1993) found that by separating newborn rats from their mothers repeatedly led to an increase in the production of stress hormones which resulted in decreased hippocampal size." Also, in humans subjected to CSA "corpus callosum (is) no smaller when controlled for neglect" (Teicher et al., 2004).
  
  "If we assume that lots of attention, licking, and grooming are the natural state of affairs and that lower levels of attention are a form of neglect," (Teicher, 2000) why don't we consider depriving children of sex as a form of neglect?
  
  SOURCES
  
  • Andersen et al., 2008: "Preliminary Evidence for Sensitive Periods in the Effect of Childhood Sexual Abuse on Regional Brain Development."
  • Anderson et al., 2002: "Abnormal T2 relaxation time in the cerebellar vermis of adults sexually abused in childhood: Potential role of the vermis in stress-enhanced risk for drug abuse."
  • Aron & Kempf, 1978: "Le pénis et la démoralisation de l'Occident", quoted from Brongersma, 1986.
  • Bartol, 2004: "Criminal Behavior: A Psychosocial Approach", the Russian translation.
  • Bernard, 1982: "Kinderschänder? Pädophilie - von der Liebe mit Kindern", quoted from Norlik, 2013.
  • Black et al., 2002: "Effects of Childhood Sexual Abuse on Adult Brain Plasticity as Measured by Quantitative Electroencephalogram", quoted from Black, 2005.
  • Black, 2005: "Effects of childhood sexual abuse on brain function as measured by quantitative EEG, neuropsychological, and psychological tests."
  • Blanco et al., 2014: "Neurological changes in brain structures among individuals with a history of childhood sexual abuse: A review."
  • Bonne et al., 2001: "Longitudinal MRI Study of Hippocampal Volume in Trauma Survivors With PTSD."
  • Bremner et al., 1997: "Magnetic Resonance Imaging-Based Measurement of Hippocampal Volume in Posttraumatic Stress Disorder Related to Childhood Physical and Sexual Abuse."
  • Bremner, Narayan et al., 1999: "Neural correlates of memories of childhood sexual abuse in women with and without posttraumatic stress disorder", quoted from de Bellis et al., 2011.
  • Bremner, Southwick & Charney, 1999: "The neurobiology of posttraumatic stress disorder: An integration of animal and human research", quoted from van Voorchees & Scarpa, 2004.
  • Bremner, Staib et al., 1999: "Neural correlates of exposure to traumatic pictures and sound in Vietnam combat veterans with and without posttraumatic stress disorder: A positron emission tomography study", quoted from de Bellis et al., 2011.
  • Brongersma, 1986: "Loving Boys", vol. 1.
  • Brongersma, 1990: "Loving Boys", vol. 2.
  • Browne & Finkelhor, 1986: "Initial and long-term effects: A review of the research", quoted from Rind et al., 1998.
  • Carrion et al., 2001: "Attenuation of frontal asymmetry in pediatric posttraumatic stress disorder", an abstract.
  • Davies, 1979: "Incest: Some Neuropsychiatric Findings", an abstract.
  • De Bellis & Zisk, 2011: "The Biological Effects of Childhood Trauma."
  • De Bellis et al., 2001: "A pilot longitudinal study of hippocampal volumes in pediatric maltreatment-related posttraumaticstress disorder", quoted from van Voochees & Scarpa, 2004.
  • De Bellis et al., 2011: "Neurodevelopmental biology associated with childhood sexual abuse."
  • De Bellis, 2001: "Developmental traumatology: The psychobiological development of maltreated children and its implications for research, treatment, and policy."
  • De Bellis, Baum et al., 1999: "Developmental Traumatology: Part I: Biological Stress Systems", quoted from de Bellis et al., 2011.
  • De Bellis, Keshavan et al., 1999: "Developmental Traumatology Part II: Brain Development."
  • De Bellis, Keshavan, Shifflett, Iyengar, Beers et al., 2002: "Brain Structures in Pediatric Maltreatment-Related PTSD: A Sociodemographically Matched Study", quoted from de Bellis et al., 2011.
  • De Bellis, Keshavan, Shifflett, Iyengar, Dahl et al., 2002: "Superior temporal gyrus volumes in pediatric generalized anxiety disorder", an abstract.
  • Der Kolk, 2003: "The neurobiology of childhood trauma and abuse."
  • Downey, 2014: "The Things Nobody Tells You About Breastfeeding."
  • Driessen et al., 2000: "Magnetic resonance imaging volumes of the hippocampus and amygdala in women with borderline personality disorder and early traumatization", quoted from Hart & Rubia, 2012.
  • Dubner & Motta, 1999: "Sexually and physically abused foster care children and posttraumatic stress disorder", quoted from de Bellis et al., 2011.
  • Francis et al., 1996: "Early environmental regulation of forebrain glucocorticoid receptor gene expression: implications for adrenocortical responses to stress."
  • Gilbertson et al., 2002: "Smaller hippocampal volume predicts pathologic vulnerability to psychological trauma", quoted from Navalta et al., 2006.
  • Goodyear-Smith, 1993: "First do no harm", quoted from Norlik, 2013.
  • Griffiths, 2016: "Erotic Lactation."
  • Gunnar & Nelson, 1994: "Event-related potentials in year-old infants: Relations with emotionality and cortisol", quoted from Black, 2005.
  • Hart & Rubia, 2012: "Neuroimaging of child abuse: A critical review."
  • Helweg-Larsen & Larsen, 2006: "The prevalence of unwanted and unlawful sexual experiences reported by Danish adolescents: Results from a national youth survey in 2002", quoted from O'Carroll, 2018.
  • Ito et al., 1993: "Increased prevalence of electrophysiological abnormalities in children with psychological, physical, and sexual abuse", quoted from Black, 2005.
  • Ito et al., 1998: "Preliminary Evidence for Aberrant Cortical Development in Abused Children: A Quantitative EEG Study."
  • Kilpatrick, 1992: "Long-Range Effects of Child and Adolescent Sexual Experiences", quoted from Norlik, 2013.
  • Ladd et al., 1996: "Persistent changes in corticotropin-releasing factor neuronal systems induced by maternal deprivation", quoted from van Voorchees & Scarpa, 2004.
  • Lahtinen et al., 2014, quoted from O'Carroll, 2018.
  • Lanius et al., 2002: "Brain activation during script-driven imagery induced dissociative responses in PTSD: a functional magnetic resonance imaging investigation", quoted from de Bellis et al., 2011.
  • Lanyon, 1986: "Theory and treatment in child molestation" (?), quoted from Bartol, 2004, and Norlik, 2013.
  • Lipschitz et al., 1999: "Posttraumatic stress disorder in hospitalized adolescents: psychiatric comorbidity and clinical correlates", quoted from de Bellis et al., 2011.
  • Martinson, 1994: "The Sexual Life of Children."
  • McEwen & Magarinos, 2001: "Stress and hippocampal plasticity: Implications for the pathophysiology of affective disorders", quoted from van Voorchees & Scarpa, 2004.
  • McLeer et al., 1994: "Psychiatric disorders in sexually abused children", quoted from de Bellis et al., 2011.
  • Mohr et al., 1964: "Pedophilia and Exhibitionism", quoted from Norlik, 2013.
  • Moorhead, 2016: "Revealed, how HALF of women feel sexually aroused while breastfeeding", "The Sun".
  • Navalta et al., 2006: "Effects of Childhood Sexual Abuse on Neuropsychological and Cognitive Function in College Women."
  • Norlik, 2013: "Tabuzone."
  • O'Carroll, 2018: "Nothing like Nordic noir to cheer us up!", "Heretic TOC".
  • Plotsky & Meaney, 1993: "Early, postnatal experience alters hypothalamic corticotropin-releasing factor (CRF) mRNA, median eminence CRF content and stress-induced release in adult rats", quoted from Francis et al., 1996, van Voorchees & Scarpa, 2004, and Black, 2005.
  • Polomeno, 1999: "Sex and Breastfeeding: An Educational Perspective."
  • Rind et al., 1998: "A Meta-Analytic Examination of Assumed Properties of Child Sexual Abuse Using College Samples."
  • Rossman, 1976: "Sexual Experience between Men and Boys", quoted from Norlik, 2013.
  • Sapolsky et al., 1990: "Hippocampal damage associated with prolonged glucocorticoid exposure in primates", quoted from Black, 2005.
  • Sapolsky, 2000: "Glucocorticoids and hippocampal atrophy in neuropsychiatric disorders", quoted from de Bellis, 2011.
  • Shin et al., 1999: "Regional cerebral blood flow during script-imagery in childhood sexual abuse-related PTSD: a PET investigation", quoted from de Bellis et al., 2011.
  • Shin et al., 2001: "An fMRI study of anterior cingulate function in posttraumatic stress disorder", quoted from de Bellis et al., 2011.
  • Shin et al., 2004: "Regional cerebral blood flow in the amygdala and medial prefrontal cortex during traumatic imagery in male and female Vietnam veterans with PTSD", quoted from de Bellis et al., 2011.
  • Silverberg, 2017: "Arousal, Orgasm and Breastfeeding."
  • Stein et al., 1997: "Hippocampal volume in women victimized by childhood sexual abuse", quoted from der Kolk, 2001, and Hart & Rubia, 2012.
  • Stengers & van Neck, 1998: "Histoire d'une frande peur, la masturbation", quoted from Norlik, 2013.
  • Streekfisher & der Kolk, 2000: "Down will come baby, cradle and all: diagnostic and therapeutic implications of chronic trauma on child development."
  • Teicher et al., 1997: "Preliminary evidence for abnormal cortical development in physically and sexually abused children using EEG coherence and MRI", quoted from Blanco et al., 2014.
  • Teicher et al., 2004: "Childhood neglect is associated with reduced corpus callosum area", quoted from Blanco et al., 2014.
  • Teicher, 2000: "Wounds that time won't heal: The neurobiology of child abuse."
  • Thomas & de Bellis, 2004: "Pituitary volumes in pediatric maltreatment-related posttraumatic stress disorder", an abstract.
  • Van Voorchees & Scarpa, 2004: "The effects of child maltreatment on the hypothalamic-pituitary-adrenal axis."
  • Virkkunen, 1981: "The Child as Participating Victim", quoted from Brongersma, 1990, and Norlik, 2013. • Vythilingam et al., 2002: "Childhood Trauma Associated With Smaller Hippocampal Volume in Women With Major Depression."
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