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Porteous M, Tavakoli P, Campbell K, Dale A, Boafo A, Robillard R. Emotional Modulation of Response Inhibition in Adolescents During Acute Suicidal Crisis: Event-Related Potentials in an Emotional Go/NoGo Task. Clin EEG Neurosci 2023; 54:451-460. [PMID: 34894813 PMCID: PMC10411029 DOI: 10.1177/15500594211063311] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 08/23/2021] [Accepted: 10/29/2021] [Indexed: 11/16/2022]
Abstract
Objectives. Suicide is the second leading cause of adolescent deaths and may be linked to difficulties with inhibitory and emotional processing. This study assessed the neural correlates of cognitive inhibition during emotional processing in adolescents hospitalized for a suicidal crisis. Methods. Event-related potentials were recorded during an emotional Go/NoGo task in 12 adolescents who attempted suicide and 12 age- and sex-matched healthy controls. Results. Compared to the control group, the suicidal group showed significantly reduced positivity at the time of the P3d (difference waveform reflecting NoGo minus Go trials) in response to happy and neutral, but not sad stimuli. For happy stimuli, this group difference was restricted to the right hemisphere. Further analyses indicated that the suicidal group had a reversed pattern of P3 amplitude in response to inhibition, with lower amplitudes in the NoGo compared to the Go conditions. Suicidal symptoms severity strongly correlated with lower amplitude of the P3d in response to neutral faces. Conclusions. These findings provide more insight into inhibition difficulties in adolescents with acute suicidal risk. Interactions between emotional and inhibition processing should be considered when treating acutely suicidal youths.
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Affiliation(s)
- Meggan Porteous
- Sleep Research Unit, University of Ottawa, Institute of Mental Health Research at the Royal, Ottawa, ON, Canada
- School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Paniz Tavakoli
- ARiEAL Research Centre, McMaster University, Hamilton, ON, Canada
| | | | - Allyson Dale
- School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Addo Boafo
- Mental Health Research Unit, Children's Hospital of Eastern Ontario, Ottawa, ON, Canada
- Department of Psychiatry, University of Ottawa, Ottawa, ON, Canada
| | - Rebecca Robillard
- Sleep Research Unit, University of Ottawa, Institute of Mental Health Research at the Royal, Ottawa, ON, Canada
- School of Psychology, University of Ottawa, Ottawa, ON, Canada
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Whole-brain white matter correlates of personality profiles predictive of subjective well-being. Sci Rep 2022; 12:4558. [PMID: 35296777 PMCID: PMC8927329 DOI: 10.1038/s41598-022-08686-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 02/22/2022] [Indexed: 11/08/2022] Open
Abstract
We investigated the white matter correlates of personality profiles predictive of subjective well-being. Using principal component analysis to first determine the possible personality profiles onto which core personality measures would load, we subsequently searched for whole-brain white matter correlations with these profiles. We found three personality profiles that correlated with the integrity of white matter tracts. The correlates of an “optimistic” personality profile suggest (a) an intricate network for self-referential processing that helps regulate negative affect and maintain a positive outlook on life, (b) a sustained capacity for visually tracking rewards in the environment and (c) a motor readiness to act upon the conviction that desired rewards are imminent. The correlates of a “short-term approach behavior” profile was indicative of minimal loss of integrity in white matter tracts supportive of lifting certain behavioral barriers, possibly allowing individuals to act more outgoing and carefree in approaching people and rewards. Lastly, a “long-term approach behavior” profile’s association with white matter tracts suggests lowered sensitivity to transient updates of stimulus-based associations of rewards and setbacks, thus facilitating the successful long-term pursuit of goals. Together, our findings yield convincing evidence that subjective well-being has its manifestations in the brain.
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Iznak AF, Iznak EV, Damyanovich EV, Oleichik IV. Differences of EEG Frequency and Spatial Parameters in Depressive Female Adolescents With Suicidal Attempts and Non-suicidal Self-injuries. Clin EEG Neurosci 2021; 52:406-413. [PMID: 33555208 DOI: 10.1177/1550059421991685] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background. Both non-suicidal self-injuries (NSSIs) and suicidal attempts (SAs) in adolescence represent significant risk factors for consequent suicide, but neurophysiological markers and predictors of these two forms of auto-aggressive behavior have been studied insufficiently. Objective. The aim of the study was to identify the differences of electroencephalographic (EEG) frequency and spatial parameters between depressive female adolescents with solely NSSI, and with combined NSSI + SA behavior in their history. Methods. The study included 45 female depressive in-patients aged 16-25 years. Baseline resting EEG spectral power, asymmetry, and coherence were analyzed in 8 narrow frequency sub-bands. Results. In the NSSI + SA subgroup (n = 24), the spectral power of parietal-occipital alpha-2 (9-11 Hz) was higher than in the NSSI subgroup, its focus was localized in the right hemisphere, and alpha-3 (11-13 Hz) spectral power was higher than alpha-1 (8-9 Hz). In the NSSI subgroup (n = 21) alpha-1 spectral power was higher than alpha-3, and foci of alpha-2 and alpha-3 were localized in the left hemisphere. EEG coherence was also higher in the NSSI + SA subgroup than in the NSSI subgroup, especially in frontal-central-parietal regions. Conclusions. The spatial distribution of the EEG frequency components in the NSSI + SA subgroup reflects the greater activation of the left hemisphere that is more typical for the EEG of individuals with an increased risk for suicide. In the NSSI subgroup, the right hemisphere is relatively more activated, and EEG coherence is lower, which is more typical for EEG in depressive disorders. The results obtained suggested the use of EEG to clarify the degree of suicidal risk in depressive female adolescents with NSSI.
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Brain grey matter abnormalities in first episode non-affective psychosis patients with suicidal behaviours: The role of neurocognitive functioning. Prog Neuropsychopharmacol Biol Psychiatry 2020; 102:109948. [PMID: 32305356 DOI: 10.1016/j.pnpbp.2020.109948] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 04/10/2020] [Accepted: 04/15/2020] [Indexed: 01/03/2023]
Abstract
BACKGROUND Suicide is one of the leading causes of premature death in first-episode psychosis (FEP) patients. The understanding of suicidal behaviour (SB) is limited, and new and integrative approaches focusing on the likely relationship of the biological and cognitive features of SB in the early phases of psychosis are warranted. We aimed to study the relationship of brain grey matter anomalies and cognitive functioning with SB or suicidal risk in a large sample of non-affective FEP patients. METHODS We used a voxel-based morphometry analysis in 145 FEP patients to investigate the pattern of structural brain abnormalities related to SB. In addition, bivariate and multivariate analyses were performed to explore the relationship between cognitive functioning and SB. RESULTS A reduction in grey matter volume in the frontal area, temporal gyrus, precuneus, uncus, amygdala, left cuneus and subcallosal gyrus as well as a marked regional volume reduction in the right hemisphere was linked with the presence of SB. Additionally, worse global cognitive functioning and living in urban areas were identified as suicide risk factors. CONCLUSIONS This study provides some insights about the brain abnormalities associated with SB in FEP patients. Specifically, the areas reported are involved in important functions related to SB, such as impulsivity, problem solving or responses to pain. Thus, the results confirm the relevant role of cognitive functioning on SB.
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Volitional determinants of self-harm behaviour and suicidal risk in persons with borderline personality disorder. EUROPEAN JOURNAL OF PSYCHIATRY 2018. [DOI: 10.1016/j.ejpsy.2017.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Karege F, Perroud N, Burkhardt S, Fernandez R, Ballmann E, La Harpe R, Malafosse A. Alterations in phosphatidylinositol 3-kinase activity and PTEN phosphatase in the prefrontal cortex of depressed suicide victims. Neuropsychobiology 2011; 63:224-31. [PMID: 21422769 DOI: 10.1159/000322145] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Accepted: 10/16/2010] [Indexed: 11/19/2022]
Abstract
BACKGROUND Recent studies have reported alterations in protein kinase B (PKB)/Akt and in its downstream target, glycogen synthase kinase 3β, in depression and suicide. The aim of the present study was to investigate possible impairment of the upstream regulators, namely phosphatidylinositol 3-kinase (PI3K) and PTEN. METHODS The ventral prefrontal cortex (Brodmann's area 11) of 24 suicide victims and 24 drug-free nonsuicide subjects was used. The antemortem diagnoses of major depression disorder were obtained from the institutional records or psychological autopsy, and toxicological analyses were performed. Protein levels of PI3K and PTEN were assayed using the immunoblot method, and the kinase activity of PI3K and Akt was determined by phosphorylation of specific substrates. RESULTS A decrease was observed in the enzymatic activity of PI3K [ANOVA: F(3, 44) = 9.20; p < 0.001] and Akt1 [ANOVA: F(3, 44) = 13.59; p < 0.001], without any change in protein levels, in both depressed suicide victims and depressed nonsuicide subjects (p < 0.01 and p < 0.002, respectively). PTEN protein levels were increased in the same groups [ANOVA: F(3, 44) = 10.5; p < 0.001]. No change was observed in nondepressed suicide victims. CONCLUSION This study concludes that attenuation of kinase activity of PKB/Akt in depressed suicide victims may be due to the combined dysregulation of PTEN and PI3K resulting in insufficient phosphorylation of lipid second messengers. The effect is associated with major depression rather than with suicide per se. Given the cellular deficits reported in major depression, the study of enzymes involved in cell survival and neuroplasticity is particularly relevant to neurotrophic factor dysregulation in depression.
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Affiliation(s)
- Félicien Karege
- Department of Psychiatry, Geneva University Hospitals, Chêne-Bourg, Switzerland.
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Blasczyk-Schiep S, Kazén M, Kuhl J, Grygielski M. Appraisal of Suicidal Risk Among Adolescents and Young Adults Through the Rorschach Test. J Pers Assess 2011; 93:518-26. [DOI: 10.1080/00223891.2011.594130] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Karege F, Perroud N, Burkhardt S, Schwald M, Ballmann E, La Harpe R, Malafosse A. Alteration in kinase activity but not in protein levels of protein kinase B and glycogen synthase kinase-3beta in ventral prefrontal cortex of depressed suicide victims. Biol Psychiatry 2007; 61:240-5. [PMID: 16876135 DOI: 10.1016/j.biopsych.2006.04.036] [Citation(s) in RCA: 167] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Revised: 04/12/2006] [Accepted: 04/13/2006] [Indexed: 12/16/2022]
Abstract
BACKGROUND Past studies in the neurobiology of suicide have reported alterations in serotonin and downstream effectors, such as Akt/protein kinase B. In this study, we aimed to examine possible abnormality in the Akt/glycogen synthase kinase-3beta (GSK-3beta) axis of depressed suicide victims' brains. METHODS Twenty suicide victims and 20 drug-free non-suicide subjects were included for a postmortem study. The ventral prefrontal cortex area (BA'11) was used, and antemortem diagnoses of major depression disorder (MDD) (DSM-IV) were made from Institution's records. The protein levels of GSK-3alpha/beta and Akt-1 were assayed with the Western blot method, and the kinase activity of Akt and GSK-3alpha/beta were determined by phosphorylation of specific substrates. RESULTS There was no change either in GSK-3alpha/beta and Akt-1 protein levels or in lithium-inhibitable total GSK-3alpha/beta enzyme activity of the ventral prefrontal cortex. The enzyme activity of Akt decreased significantly [analysis of variance (ANOVA): F(3,36)=5.372; p= .003], whereas GSK-3beta activity increased significantly [ANOVA: F(3,36)=8.567; p= .002] in depressed suicide victims and non-suicide subjects but not in non-depressed suicide victims. CONCLUSIONS This study indicated that the activity rather than the protein levels of Akt and GSK-3beta was altered. The alteration was associated with MDD rather than with suicide per se.
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Affiliation(s)
- Félicien Karege
- Department of Psychiatry, Geneva University Hospitals, Chêne-Bourg, Geneva, Switzerland.
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Left-Hemispheric Activation and Self-Infiltration: Testing a Neuropsychological Model of Internalization. MOTIVATION AND EMOTION 2005. [DOI: 10.1007/s11031-005-9439-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Glodzik-Sobanska L, Slowik A, Kieltyka A, Kozub J, Sobiecka B, Urbanik A, Szczudlik A. Reduced prefrontal N-acetylaspartate in stroke patients with apathy. J Neurol Sci 2005; 238:19-24. [PMID: 16084528 DOI: 10.1016/j.jns.2005.06.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2004] [Revised: 05/05/2005] [Accepted: 06/02/2005] [Indexed: 11/15/2022]
Abstract
BACKGROUND Although substantial numbers of stroke patients suffer from apathy, its causes are still poorly understood. Previous studies suggest that dysfunction of the frontal lobes is implicated in the pathophysiology of motivation. Our aim was to investigate the association between proton magnetic resonance spectroscopy (H1-MRS) measurements in unaffected frontal lobes and apathy in a group of first-time stroke patients. METHODS 31 patients with a first-time ischemic stroke located outside the frontal lobes and 20 healthy subjects were included in the study. The authors performed single voxel H1-MRS in order to measure the N-acetylaspartate/creatine (NAA)/Cr, glutamate+glutamine (Glx)/Cr, choline (Cho)/Cr and myo-inositol (mI)/Cr ratios in the frontal lobes. Patients were assessed between days 7 and 12 post stroke. Diagnosis of apathy was made on the basis of clinical observation, interview and Apathy Scale. RESULTS 13 out of 31 patients (42%) demonstrated apathy. Patients with apathy had lower NAA/Cr ratios in the right frontal lobe than non-apathetic subjects. The patient group was divided into two subgroups: Those with left hemisphere strokes, and those with right hemisphere strokes. Of these subjects, significantly lowered NAA/Cr ratios were found in the right hemispheres of apathetic patients in the subgroup with left-sided brain lesions. CONCLUSIONS These findings point to the association between apathy and frontal lobe integrity, suggest different reactions of the hemispheres and indicate that changes in the NAA/Cr ratio are related to the apathy.
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Affiliation(s)
- Lidia Glodzik-Sobanska
- Center for Brain Health, NYU School of Medicine, 550 First Avenue, HN-400, NY 10016-6481, USA.
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Karege F, Vaudan G, Schwald M, Perroud N, La Harpe R. Neurotrophin levels in postmortem brains of suicide victims and the effects of antemortem diagnosis and psychotropic drugs. ACTA ACUST UNITED AC 2005; 136:29-37. [PMID: 15893584 DOI: 10.1016/j.molbrainres.2004.12.020] [Citation(s) in RCA: 419] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2004] [Revised: 12/22/2004] [Accepted: 12/24/2004] [Indexed: 12/11/2022]
Abstract
Suicide is a major public health problem but the neurobiological factors of risk are poorly understood. Recent studies have mentioned changes in the serotoninergic system and in neuronal plasticity, as well. The present investigation was undertaken to examine whether there is an abnormality in brain-derived neurotrophic factor (BDNF) and neurotrophin-3 (NT-3) proteins in suicide victims. The effect of diagnosis and drug treatments on the neurotrophins was also assessed. Thirty suicide victims (11 F/19 M) and twenty-four (10 F/14 M) drug-free non-suicide subjects, devoid of psychiatric or neurological disease, were examined. Antemortem diagnoses and toxicological analyses had been performed. The ventral prefrontal cortex (PFC), the hippocampus, and the entorhinal cortex were selected. BDNF and NT-3 levels were assayed either with the Western blot or with the ELISA method. Results indicated a significant decrease in BDNF and NT-3 levels in the hippocampus and PFC (only BDNF) but not in the entorhinal cortex, of suicide victims who were drug-free compared with non-suicide controls. The decrease was observed in all suicide victims, regardless of diagnosis. In drug-treated suicide victims, neurotrophin levels were not significantly different from non-suicide controls. This study supports a role of BDNF and NT-3 neurotrophin, in the pathophysiology of suicidal behavior. Anatomically, this role may implicate the hippocampus and the PFC but not the entorhinal cortex. The absence of change in BDNF and NT-3 levels of drug-treated suicide victims suggests that both neurotrophins are mediators of psychotropic drugs. A better understanding of the neurobiology of suicide could help detect populations at risk.
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Affiliation(s)
- Félicien Karege
- Geneva University Hospitals, Department of Psychiatry, 2 ch Petit Bel-Air, CH-1225 Chêne-Bourg, Switzerland.
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Kuhl J, Kaschel R. Entfremdung als Krankheitsursache: Selbstregulation von Affekten und integrative Kompetenz. PSYCHOLOGISCHE RUNDSCHAU 2004. [DOI: 10.1026/0033-3042.55.2.61] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Zusammenfassung. Alienation (Entfremdung) wurde als potentielle Krankheitsursache von der experimentell ausgerichteten Psychologie lange Zeit nicht systematisch untersucht. In der Vergangenheit war der Alienationsbegriff fast ausschließlich hermeneutisch-phänomenologischen Ansätzen der Persönlichkeitspsychologie vorbehalten. Auch neuere empirische Versuche, alienationsverwandte Phänomene zu untersuchen, tun sich schwer mit einer funktionsanalytischen, systemtheoretisch fundierten Betrachtungsweise (z.B. Deci & Ryan, 2000 ). In diesem Beitrag wird argumentiert, dass Alienation (1) operationalisierbar und ihre Bedingungen und Auswirkungen systematisch untersuchbar sind, dass (2) zwei empirisch dissoziierbare Formen von Alienation unterschieden werden können, und dass (3) die funktionalen Orte manifester und latenter Alienation im Rahmen einer neurobiologisch begründbaren Systemtheorie der Persönlichkeit spezifiziert werden können (PSI-Theorie). Es werden Befunde aus Experimenten berichtet, die die Annahmen dieser Theorie wie auch die postulierten Auswirkungen der Alienation auf die Introjektion bedürfnisfremder Ziele und die daraus resultierende Symptomverschlimmerung überprüften.
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Rotenberg VS. The peculiarity of the right-hemisphere function in depression: solving the paradoxes. Prog Neuropsychopharmacol Biol Psychiatry 2004; 28:1-13. [PMID: 14687851 DOI: 10.1016/s0278-5846(03)00163-5] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Depression is characterized by functional insufficiency of the right hemisphere combined with its physiological overactivation. This paradox can be solved in the frame of the general concept of brain laterality. According to the present assumption, the left hemisphere organizes any information in an unambiguous monosemantic context, and this process requires an additional activation of the brain cortex in order to restrict natural relationships between objects and events. On the contrary, the right hemisphere organizes any information in the polysemantic context based on the simultaneous capture of the numerous natural relationships between elements of information. In healthy creative subjects this process does not require additional physiological activation of the cortex. In depression the physiological overactivation of the right hemisphere reflects the unsuccessful effort to overcome its functional insufficiency.
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Affiliation(s)
- Vadim S Rotenberg
- Abarbanel Mental Health Center, Sackler Medical School, Tel-Aviv University, Keren Kayemet Str. 15, Bat-Yam, Tel-Aviv, Israel.
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Schore AN. Dysregulation of the right brain: a fundamental mechanism of traumatic attachment and the psychopathogenesis of posttraumatic stress disorder. Aust N Z J Psychiatry 2002; 36:9-30. [PMID: 11929435 DOI: 10.1046/j.1440-1614.2002.00996.x] [Citation(s) in RCA: 291] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE This review integrates recent advances in attachment theory, affective neuroscience, developmental stress research, and infant psychiatry in order to delineate the developmental precursors of posttraumatic stress disorder. METHOD Existing attachment, stress physiology, trauma, and neuroscience literatures were collected using Index Medicus/Medline and Psychological Abstracts. This converging interdisciplinary data was used as a theoretical base for modelling the effects of early relational trauma on the developing central and autonomic nervous system activities that drive attachment functions. RESULTS Current trends that integrate neuropsychiatry, infant psychiatry, and clinical psychiatry are generating more powerful models of the early genesis of a predisposition to psychiatric disorders, including PTSD. Data are presented which suggest that traumatic attachments, expressed in episodes of hyperarousal and dissociation, are imprinted into the developing limbic and autonomic nervous systems of the early maturing right brain. These enduring structural changes lead to the inefficient stress coping mechanisms that lie at the core of infant, child, and adult posttraumatic stress disorders. CONCLUSIONS Disorganised-disoriented insecure attachment, a pattern common in infants abused in the first 2 years of life, is psychologically manifest as an inability to generate a coherent strategy for coping with relational stress. Early abuse negatively impacts the developmental trajectory of the right brain, dominant for attachment, affect regulation, and stress modulation, thereby setting a template for the coping deficits of both mind and body that characterise PTSD symptomatology. These data suggest that early intervention programs can significantly alter the intergenerational transmission of posttraumatic stress disorders.
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Affiliation(s)
- Allan N Schore
- University of California at Los Angeles School of Medicine, Northridge, CA 91324, USA.
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Schore AN. MINDS IN THE MAKING: ATTACHMENT, THE SELF-ORGANIZING BRAIN, AND DEVELOPMENTALLY-ORIENTED PSYCHOANALYTIC PSYCHOTHERAPY. BRITISH JOURNAL OF PSYCHOTHERAPY 2001. [DOI: 10.1111/j.1752-0118.2001.tb00593.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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