Fabien Trémeau

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OBJECTIVE Blunted affect is a major symptom in schizophrenia, and affective deficits clinically encompass deficits in expressiveness. Emotion research and ethological studies have shown that patients with schizophrenia are impaired in various modalities of expressiveness (posed and spontaneous emotion expressions, coverbal gestures, and smiles). Similar(More)
Emotion deficits in schizophrenia have been described since the time of Kraepelin. However, no comprehensive review of clinical emotion studies has ever been conducted. In this work, studies that used diagnostic criteria and were published in English were selected from an extensive PubMed search. Fifty-five studies on emotion expression repeatedly showed(More)
The DSM-5 formulation presents an opportunity to refine the negative symptom assessments that are crucial for a schizophrenia diagnosis. This review traces the history of negative symptom constructs in neuropsychiatry from their earliest conceptualizations in the 19th century. It presents the relevant literature for distinguishing between different types of(More)
The commonly used rating scales for negative symptoms in schizophrenia have shown good reliability, but disagreement persists regarding both the content definition and the validity of several items. Instead, authors have recommended rating the specific behaviors that are defined as negative symptoms. To surmount these shortcomings, we developed a new rating(More)
OBJECTIVE Although a family history of schizophrenia has been associated with negative symptoms, family history is inconsistently related to the presence of the deficit syndrome. METHOD The authors assessed family history and the deficit syndrome in 99 patients with DSM-III-R-diagnosed schizophrenia who were assessed during clinical treatment. Of these 99(More)
We determined suicide attempt characteristics in 160 opioid-dependent subjects. Three aspects of suicide vulnerability were also examined: familial aggregation of suicidal behaviors, degree of aggression/impulsivity, and smoking. Forty-eight percent of subjects had a personal history of suicide attempt. A personal history of suicide attempt was associated(More)
Previous studies of the prolactin response to D-fenfluramine in depressed patients have yielded inconsistent results. This may be because they did not address the question of suicidality. We carried out this study to test the hypothesis that lower prolactin response to D-fenfluramine is more closely associated with suicidal behavior than with depression(More)
BACKGROUND Three temporal stages in the evaluation of positive affect can be identified: anticipation, experience (hedonia) and memory. In schizophrenia, despite research indicating non-impaired hedonic capacities, little is known about anticipation and memory of positive affect. Moreover, the role of positive affect evaluations on motivation has rarely(More)
BACKGROUND Ambivalence and anhedonia have long been identified as schizophrenic symptoms. However, ambivalence has rarely been studied, and in most evocative studies, schizophrenia participants are not anhedonic. Affective neurosciences posit two evaluative systems (one for Positivity and one for Negativity), the coactivation of which produces ambivalence,(More)
Recent studies suggest that altered serotonergic (5-HT) function, as assessed by lower prolactin (PRL) response to fenfluramine (FEN), a specific 5-HT releaser and uptake inhibitor, is associated with suicidal behavior in either depressed and personality disordered patients. The purpose of this study was to investigate, in schizophrenic patients, the(More)