Serotonin 4 receptor brain binding and oxytocin-promoted affective and social cognition in healthy women - A randomized controlled trial.

Background: Oxytocin is a neuropeptide known for its prosocial properties and role in social bonding, and intervention with intranasal oxytocin is posited to modulate affective and social cognition (i.e., hot cognition). Serotonin (5-HT) neurotransmission is also involved in emotional and social behaviors and appear to work in concert with oxytocin. However, this interaction so far remains elusive in humans. Therefore, we here investigate the relation between brain 5-HT 4 receptor (5-HT4R) levels and oxytocin-modulated hot cognition. Methods: Using a double blind, placebo-controlled, randomized crossover design, 35 healthy women received a dose of 24 IU intranasal oxytocin or placebo one month apart. The women were naturally cycling and to control for hormonal fluctuations across the menstrual cycle, intervention days were placed during the early follicular phase. Following intervention cognitive domains including affective memory, affective bias in emotion processing, moral emotions and social information preference were assessed. In a subgroup (n = 25), Positron Emission Tomography (PET) was used to image 5-HT4R brain binding at baseline with the [11C]SB207145 radiotracer. Results: No effect of oxytocin intervention relative to placebo was observed for any of the cognitive outcomes. Likewise, regional brain 5-HT4R binding at baseline was not associated with cognitive responses to oxytocin intervention. Conclusion: Our data suggest that intervention with intranasal oxytocin does not have an overall effect on hot cognition in healthy women and further that 5-HT4R brain architecture does not mediate cognitive effects of oxytocin in the healthy state.

Associations of negative affective biases and depressive symptoms in a community-based sample.

BACKGROUND: Major depressive disorder (MDD) was previously associated with negative affective biases. Evidence from larger population-based studies, however, is lacking, including whether biases normalise with remission. We investigated associations between affective bias measures and depressive symptom severity across a large community-based sample, followed by examining differences between remitted individuals and controls. METHODS: Participants from Generation Scotland (N = 1109) completed the: (i) Bristol Emotion Recognition Task (BERT), (ii) Face Affective Go/No-go (FAGN), and (iii) Cambridge Gambling Task (CGT). Individuals were classified as MDD-current (n = 43), MDD-remitted (n = 282), or controls (n = 784). Analyses included using affective bias summary measures (primary analyses), followed by detailed emotion/condition analyses of BERT and FAGN (secondary analyses). RESULTS: For summary measures, the only significant finding was an association between greater symptoms and lower risk adjustment for CGT across the sample (individuals with greater symptoms were less likely to bet more, despite increasingly favourable conditions). This was no longer significant when controlling for non-affective cognition. No differences were found for remitted-MDD v. controls. Detailed analysis of BERT and FAGN indicated subtle negative biases across multiple measures of affective cognition with increasing symptom severity, that were independent of non-effective cognition [e.g. greater tendency to rate faces as angry (BERT), and lower accuracy for happy/neutral conditions (FAGN)]. Results for remitted-MDD were inconsistent. CONCLUSIONS: This suggests the presence of subtle negative affective biases at the level of emotion/condition in association with depressive symptoms across the sample, over and above those accounted for by non-affective cognition, with no evidence for affective biases in remitted individuals.

Validación de una versión en español abreviada de la batería EMOTICOM (VEA-EMOTICOM) / Validation of a Spanish short version of the EMOTICOM battery (VEA-EMTICOM)

RESUMEN: Introducción: la mayoría de las escalas empleadas en la evaluación de los trastornos psiquiátricos se centran en el estado clínico del paciente. Sin embargo, es importante medir cuantitativamente dimensiones específicas, como el funcionamiento cognitivo, afectivo o social, y registrar su evolución en el ámbito clínico o de investigación. La batería EMOTICOM incluye cuatro dominios de cognición afectiva, procesamiento de emociones, motivación, impulsividad y cognición social. Aquí presentamos datos psicométricos de una versión en español abreviada (VEA-EMOTICOM). Metodología: la muestra incluyó doscientos voluntarios sanos (31,68 años ± 8,38; 111 hombres). Cuarenta y dos sujetos fueron re-evaluados para determinar la fiabilidad test-retest. La VEA-EMOTICOM comprende 9 tareas programadas en una computadora portátil a completar en una hora. La batería se administró en una secuencia aleatoria y se permitió períodos de descanso. Resultados: se observaron efectos de piso pequeños para 3 resultados y moderados para 1 resultado, además de efectos de techo pequeño para 3 resultados y moderado para 1 resultado. Dos tareas exhibieron una excelente confiabilidad prueba-reprueba, cuatro una buena confiabilidad, siete confiabilidad moderada, y, dos mostraron una confiabilidad de prueba-reprueba deficiente. Los resultados de la mayoría de las tareas no se correlacionaron con la edad ni con el género. No se pudo confirmar una estructura subyacente de 4 factores. Conclusiones: La VEA-EMOTICOM parece ser una batería práctica y adecuada para evaluar cognición afectiva en población hispano parlante.

ABSTRACT Introduction: Most scales used in the assessment of psychiatric disorders focus on the clinical status of the patient. However, it is important to quantitatively measure specific dimensions, such as cognitive, affective or social functioning, and to record their evolution in the clinical or research setting. The EMOTICOM battery includes four domains of affective cognition; processing of emotions; motivation; impulsivity; and social cognition. Here we present psychometric data from an abbreviated Spanish version (VEA-EMOTICOM). Methodology: The sample included two hundred healthy volunteers (31.68 years ± 8.38; 111 men). Forty-two subjects were re-evaluated, to determine test-retest reliability. The VEA-EMOTICOM comprises 9 tasks programmed on a laptop computer to be completed in one hour. The battery was administered in a random sequence and rest periods were allowed. Results: Small floor effects were observed for 3 outcomes and moderate for 1 outcome, as well as small ceiling effects for 3 outcomes and moderate for 1 outcome. Two tasks showed excellent test-retest reliability; four showed good reliability; seven showed moderate reliability; and two showed poor test-retest reliability. The results of most of the tasks were not correlated with age or gender. An underlying four-factor structure could not be confirmed. Conclusions: The VEA-EMOTICOM seems to be a practical and adequate battery to evaluate affective cognition in Spanish-speaking population

Hot and cold cognitive disturbances in antidepressant-free patients with major depressive disorder: a NeuroPharm study.

BACKGROUND: Cognitive disturbances are common and disabling features of major depressive disorder (MDD). Previous studies provide limited insight into the co-occurrence of hot (emotion-dependent) and cold (emotion-independent) cognitive disturbances in MDD. Therefore, we here map both hot and cold cognition in depressed patients compared to healthy individuals. METHODS: We collected neuropsychological data from 92 antidepressant-free MDD patients and 103 healthy controls. All participants completed a comprehensive neuropsychological test battery assessing hot cognition including emotion processing, affective verbal memory and social cognition as well as cold cognition including verbal and working memory and reaction time. RESULTS: The depressed patients showed small to moderate negative affective biases on emotion processing outcomes, moderate increases in ratings of guilt and shame and moderate deficits in verbal and working memory as well as moderately slowed reaction time compared to healthy controls. We observed no correlations between individual cognitive tasks and depression severity in the depressed patients. Lastly, an exploratory cluster analysis suggested the presence of three cognitive profiles in MDD: one characterised predominantly by disturbed hot cognitive functions, one characterised predominantly by disturbed cold cognitive functions and one characterised by global impairment across all cognitive domains. Notably, the three cognitive profiles differed in depression severity. CONCLUSION: We identified a pattern of small to moderate disturbances in both hot and cold cognition in MDD. While none of the individual cognitive outcomes mapped onto depression severity, cognitive profile clusters did. Overall cognition-based stratification tools may be useful in precision medicine approaches to MDD.

Psychometric Properties and Validation of the EMOTICOM Test Battery in a Healthy Danish Population.

Disruptions in hot cognition, i.e., the processing of emotionally salient information, are prevalent in most neuropsychiatric disorders and constitute a potential treatment target. EMOTICOM is the first comprehensive neuropsychological test battery developed specifically to assess hot cognition. The aim of the study was to validate and establish a Danish language version and reference data for the EMOTICOM test battery. To evaluate the psychometric properties of 11 EMOTICOM tasks, we collected data from 100 healthy Danish participants (50 males, 50 females) including retest data from 49 participants. We assessed test-retest reliability, floor and ceiling effects, task-intercorrelations, and correlations between task performance and relevant demographic and descriptive factors. We found that test-retest reliability varied from poor to excellent while some tasks exhibited floor or ceiling effects. Intercorrelations among EMOTICOM task outcomes were low, indicating that the tasks capture different cognitive constructs. EMOTICOM task performance was largely independent of age, sex, education, and IQ as well as current mood, personality, and self-reported motivation and diligence during task completion. Overall, many of the EMOTICOM tasks were found to be useful and objective measures of hot cognition although select tasks may benefit from modifications to avoid floor and ceiling effects in healthy individuals.

EMOTICOM: A Neuropsychological Test Battery to Evaluate Emotion, Motivation, Impulsivity, and Social Cognition.

In mental health practice, both pharmacological and non-pharmacological treatments are aimed at improving neuropsychological symptoms, including cognitive and emotional impairments. However, at present there is no established neuropsychological test battery that comprehensively covers multiple affective domains relevant in a range of disorders. Our objective was to generate a standardized test battery, comprised of existing, adapted and novel tasks, to assess four core domains of affective cognition (emotion processing, motivation, impulsivity and social cognition) in order to facilitate and enhance treatment development and evaluation in a broad range of neuropsychiatric disorders. The battery was administered to 200 participants aged 18-50 years (50% female), 42 of whom were retested in order to assess reliability. An exploratory factor analysis identified 11 factors with eigenvalues greater than 1, which accounted for over 70% of the variance. Tasks showed moderate to excellent test-retest reliability and were not strongly correlated with demographic factors such as age or IQ. The EMOTICOM test battery is therefore a promising tool for the assessment of affective cognitive function in a range of contexts.