RESUMO
Romantic rejection causes a profound sense of loss and negative affect. It can induce clinical depression and in extreme cases lead to suicide and/or homicide. To begin to identify the neural systems associated with this natural loss state, we used functional magnetic resonance imaging to study 10 women and 5 men who had recently been rejected by a partner but reported they were still intensely "in love." Participants alternately viewed a photograph of their rejecting beloved and a photograph of a familiar, individual, interspersed with a distraction-attention task. Their responses while looking at their rejecter included love, despair, good, and bad memories, and wondering why this happened. Activation specific to the image of the beloved occurred in areas associated with gains and losses, craving and emotion regulation and included the ventral tegmental area (VTA) bilaterally, ventral striatum, medial and lateral orbitofrontal/prefrontal cortex, and cingulate gyrus. Compared with data from happily-in-love individuals, the regional VTA activation suggests that mesolimbic reward/survival systems are involved in romantic passion regardless of whether one is happily or unhappily in love. Forebrain activations associated with motivational relevance, gain/loss, cocaine craving, addiction, and emotion regulation suggest that higher-order systems subject to experience and learning also may mediate the rejection reaction. The results show activation of reward systems, previously identified by monetary stimuli, in a natural, endogenous, negative emotion state. Activation of areas involved in cocaine addiction may help explain the obsessive behaviors associated with rejection in love.
Assuntos
Comportamento Aditivo/psicologia , Emoções/fisiologia , Amor , Rejeição em Psicologia , Recompensa , Adolescente , Encéfalo/fisiologia , Mapeamento Encefálico , Feminino , Pesar , Humanos , Processamento de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Masculino , Comportamento Obsessivo/psicologia , Ligação do Par , Estimulação Luminosa , Fatores de Tempo , Adulto JovemRESUMO
Few studies examine the clinical utility of autism spectrum disorder (ASD) rating scales for screening referrals to child psychiatry clinics. Parents/teachers from Long Island, NY, completed the Child Symptom Inventory-4, a DSM-IV-referenced rating scale for 6- to 12-year-old clinical referrals with an ASD (N = 317) or nonASD psychiatric (N = 191) diagnosis. Two separate groups of children attending public school, regular education classes in the same geographic area were also rated by their parents (N = 446) and teachers (N = 464). Stepwise forward regression generated a scoring algorithm based on a subset of all CSI-4 items that best differentiated ASD from nonASD children. ROC analyses indicated high levels of sensitivity/specificity for recommended ASD cutoff scores for parent and teacher ratings.
Assuntos
Algoritmos , Transtorno Autístico/diagnóstico , Inquéritos e Questionários , Síndrome de Asperger/diagnóstico , Síndrome de Asperger/epidemiologia , Transtorno do Deficit de Atenção com Hiperatividade/diagnóstico , Transtorno do Deficit de Atenção com Hiperatividade/epidemiologia , Transtorno Autístico/epidemiologia , Criança , Manual Diagnóstico e Estatístico de Transtornos Mentais , Feminino , Humanos , Masculino , Variações Dependentes do Observador , Psicometria , Curva ROCRESUMO
OBJECTIVE: The early identification of children with autism spectrum disorders (ASDs) is critical for the remediation of developmental deficits. This study examined the clinical utility of ASD scoring algorithms for the Early Childhood Inventory-4 (ECI-4), a DSM-IV-referenced rating scale, as a practical solution for screening 3- to 5-year-old children for ASD in medical and public school settings. METHODS: Parents/teachers completed the ECI-4 for 3- to 5-year-old clinic referrals with an ASD (n = 196) or non-ASD psychiatric (n = 135) diagnosis. Children attending early childhood (i.e., day care, preschool, Head Start) programs were also rated by their parents (n = 507) and teachers (n = 407). RESULTS: Stepwise logistic regression was used to generate ASD scoring algorithms for the ECI-4. Receiver operating characteristic analyses generally indicated high levels of sensitivity/specificity for recommended ASD cutoff scores for parent (clinic: 0.96/0.80; preschool: 0.92/0.96) and teacher (clinic: 0.81/0.79; preschool: 0.97/0.92) ratings. CONCLUSION: Findings indicate that the ECI-4 shows promise as a clinically useful screening measure for ASD in clinic-referred and preschool children.
Assuntos
Transtorno Autístico/diagnóstico , Transtorno Autístico/epidemiologia , Programas de Rastreamento/métodos , Inquéritos e Questionários , Síndrome de Asperger/diagnóstico , Síndrome de Asperger/epidemiologia , Pré-Escolar , Feminino , Humanos , Masculino , Variações Dependentes do Observador , PrevalênciaRESUMO
Scientists have described many physical and behavioral traits in avian and mammalian species that evolved to attract mates. But the brain mechanisms by which conspecifics become attracted to these traits is unknown. This paper maintains that two aspects of mate choice evolved in tandem: 1) traits that evolved in the "display producer" to attract mates and, 2) corresponding neural mechanisms in the "display chooser" that enable them to become attracted to these display traits. Then it discusses our (in-progress) fMRI brain scanning project on human romantic attraction, what we believe is a developed form of "courtship attraction" common to avian and mammalian species as well as the primary neural mechanism underlying avian and mammalian mate choice. The paper hypothesizes that courtship attraction is associated with elevated levels of central dopamine and norepinephrine and decreased levels of central serotonin in reward pathways of the brain. It also proposes that courtship attraction is part of a triune brain system for mating, reproduction and parenting. 1)The sex drive evolved to motivate birds and mammals to court any conspecifics. 2) The attraction system evolved to enable individuals to discriminate among potential mating partners and focus courtship activities on particular individuals, thereby conserving mating time and energy. 3) The neural circuitry for attachment evolved to enable individuals to complete species-specific parental duties.
Assuntos
Casamento/psicologia , Fenômenos Fisiológicos do Sistema Nervoso , Mapeamento Encefálico , Corte/psicologia , Humanos , Imageamento por Ressonância MagnéticaRESUMO
Early-stage romantic love can induce euphoria, is a cross-cultural phenomenon, and is possibly a developed form of a mammalian drive to pursue preferred mates. It has an important influence on social behaviors that have reproductive and genetic consequences. To determine which reward and motivation systems may be involved, we used functional magnetic resonance imaging and studied 10 women and 7 men who were intensely "in love" from 1 to 17 mo. Participants alternately viewed a photograph of their beloved and a photograph of a familiar individual, interspersed with a distraction-attention task. Group activation specific to the beloved under the two control conditions occurred in dopamine-rich areas associated with mammalian reward and motivation, namely the right ventral tegmental area and the right postero-dorsal body and medial caudate nucleus. Activation in the left ventral tegmental area was correlated with facial attractiveness scores. Activation in the right anteromedial caudate was correlated with questionnaire scores that quantified intensity of romantic passion. In the left insula-putamen-globus pallidus, activation correlated with trait affect intensity. The results suggest that romantic love uses subcortical reward and motivation systems to focus on a specific individual, that limbic cortical regions process individual emotion factors, and that there is localization heterogeneity for reward functions in the human brain.