6 research outputs found
Detecci贸n de procesamiento at铆pico de emociones en excombatientes colombianos
The reincorporation process of Colombian ex-combatants is hindered by their chronic exposure to violence, which affects their Emotional Processing (EP). Characterizing their EP will contribute to their reinsertion. The objective of this work is to define an EEG-based brain connectivity approach to identify differences in EP between Colombian ex-combatants and individuals who were not directly exposed to the armed conflict. The proposed approach involves defining the Regions of Interest (ROI) and selecting one of five commonly used brain connectivity metrics: Correlation, Cross-Correlation, Coherence, Imaginary part of Coherency, and Phase-Lag Index. Significant differences were found in the positive valence stimuli in the Beta frequency band. These results support the previously reported trend in the literature regarding the difficulties ex-combatants have to process emotional information with positive valence.El proceso de reincorporaci贸n social de los excombatientes colombianos, se dificulta debido a que la exposici贸n cr贸nica a la violencia afecta su procesamiento emocional (PE). Este proceso de reincorporaci贸n se puede facilitar mediante la caracterizaci贸n de su PE. El objetivo de este art铆culo es definir una metodolog铆a de conectividad con EEG que permita identificar diferencias entre el EP de excombatientes y personas no directamente expuestas al conflicto armado. La metodolog铆a propuesta consiste en definir las Regiones de Inter茅s (ROI) y seleccionar una de cinco m茅tricas de conectividad funcional cerebral com煤nmente utilizadas: correlaci贸n, correlaci贸n cruzada, coherencia, parte imaginaria de la coherencia y el 铆ndice de desfase. Se encontraron diferencias significativas en los est铆mulos con valencia positiva en la banda de frecuencias Beta. Estos resultados apoyan la tendencia previamente reportada en la literatura hacia las dificultades de los excombatientes para procesar informaci贸n emocional con valencia positiva
Detecting atypical functioning of emotional processing in Colombian ex-combatants
El proceso de reincorporaci贸n social de los excombatientes colombianos, se dificulta debido a que la exposici贸n cr贸nica a la violencia afecta su procesamiento emocional (PE). Este proceso de reincorporaci贸n se puede facilitar mediante la caracterizaci贸n de su PE. El objetivo de este art铆culo es definir una metodolog铆a de conectividad con EEG que permita identificar diferencias entre el EP de excombatientes y personas no directamente expuestas al conflicto armado. La metodolog铆a propuesta consiste en definir las Regiones de Inter茅s (ROI) y seleccionar una de cinco m茅tricas de conectividad funcional cerebral com煤nmente utilizadas: correlaci贸n, correlaci贸n cruzada, coherencia, parte imaginaria de la coherencia y el 铆ndice de desfase. Se encontraron diferencias significativas en los est铆mulos con valencia positiva en la banda de frecuencias Beta. Estos resultados apoyan la tendencia previamente reportada en la literatura hacia las dificultades de los excombatientes para procesar informaci贸n emocional con valencia positiva.The reincorporation process of Colombian ex-combatants is hindered by their chronic exposure to violence, which affects their Emotional Processing (EP). Characterizing their EP will contribute to their reinsertion. The objective of this work is to define an EEG-based brain connectivity approach to identify differences in EP between Colombian ex-combatants and individuals who were not directly exposed to the armed conflict. The proposed approach involves defining the Regions of Interest (ROI) and selecting one of five commonly used brain connectivity metrics: Correlation, Cross-Correlation, Coherence, Imaginary part of Coherency, and Phase-Lag Index. Significant differences were found in the positive valence stimuli in the Beta frequency band. These results support the previously reported trend in the literature regarding the difficulties ex-combatants have to process emotional information with positive valence
Detecci贸n de procesamiento at铆pico de emociones en excombatientes colombianos
RESUMEN: El proceso de reincorporaci贸n social de los excombatientes colombianos, se dificulta debido a que la exposici贸n cr贸nica a la violencia afecta su procesamiento emocional (PE). Este proceso de reincorporaci贸n se puede facilitar mediante la caracterizaci贸n de su PE. El objetivo de este art铆culo es definir una metodolog铆a de conectividad con EEG que permita identificar diferencias entre el EP de excombatientes y personas no directamente expuestas al conflicto armado. La metodolog铆a propuesta consiste en definir las Regiones de Inter茅s (ROI) y seleccionar una de cinco m茅tricas de conectividad funcional cerebral com煤nmente utilizadas: correlaci贸n, correlaci贸n cruzada, coherencia, parte imaginaria de la coherencia y el 铆ndice de desfase. Se encontraron diferencias significativas en los est铆mulos con valencia positiva en la banda de frecuencias Beta. Estos resultados apoyan la tendencia previamente reportada en la literatura hacia las dificultades de los excombatientes para procesar informaci贸n emocional con valencia positiva.ABSTRACT: The reincorporation process of Colombian ex-combatants is hindered by their chronic exposure to violence, which affects their Emotional Processing (EP). Characterizing their EP will contribute to their reinsertion. The objective of this work is to define an EEG-based brain connectivity approach to identify differences in EP between Colombian ex-combatants and individuals who were not directly exposed to the armed conflict. The proposed approach involves defining the Regions of Interest (ROI) and selecting one of five commonly used
brain connectivity metrics: Correlation, Cross-Correlation, Coherence, Imaginary part of Coherency, and Phase-Lag Index. Significant differences were found in the positive valence stimuli in the Beta frequency band. These results support the previously reported trend in the literature regarding the difficulties ex-combatants have to process emotional information with positive valence
Detecting atypical functioning of emotional processing in Colombian ex-combatants
The reincorporation process of Colombian ex-combatants is hindered by their chronic exposure to violence, which affects their Emotional Processing (EP). Characterizing their EP will contribute to their reinsertion. The objective of this work is to define an EEG-based brain connectivity approach to identify differences in EP between Colombian ex-combatants and individuals who were not directly exposed to the armed conflict. The proposed approach involves defining the Regions of Interest (ROI) and selecting one of five commonly used brain connectivity metrics: Correlation, Cross-Correlation, Coherence, Imaginary part of Coherency, and Phase-Lag Index. Significant differences were found in the positive valence stimuli in the Beta frequency band. These results support the previously reported trend in the literature regarding the difficulties ex-combatants have to process emotional information with positive valence.El proceso de reincorporaci贸n social de los excombatientes colombianos, se dificulta debido a que la exposici贸n cr贸nica a la violencia afecta su procesamiento emocional (PE). Este proceso de reincorporaci贸n se puede facilitar mediante la caracterizaci贸n de su PE. El objetivo de este art铆culo es definir una metodolog铆a de conectividad con EEG que permita identificar diferencias entre el EP de excombatientes y personas no directamente expuestas al conflicto armado. La metodolog铆a propuesta consiste en definir las Regiones de Inter茅s (ROI) y seleccionar una de cinco m茅tricas de conectividad funcional cerebral com煤nmente utilizadas: correlaci贸n, correlaci贸n cruzada, coherencia, parte imaginaria de la coherencia y el 铆ndice de desfase. Se encontraron diferencias significativas en los est铆mulos con valencia positiva en la banda de frecuencias Beta. Estos resultados apoyan la tendencia previamente reportada en la literatura hacia las dificultades de los excombatientes para procesar informaci贸n emocional con valencia positiva
Potential cognitive endophenotypes in multigenerational families: segregating ADHD from a genetic isolate
Endophenotypes are neurobiological markers cosegregating and associated with illness. These biomarkers represent a promising strategy to dissect ADHD biological causes. This study was aimed at contrasting the genetics of neuropsychological tasks for intelligence, attention, memory, visual-motor skills, and executive function in children from multigenerational and extended pedigrees that cluster ADHD in a genetic isolate. In a sample of 288 children and adolescents, 194 (67.4%) ADHD affected and 94 (32.6%) unaffected, a battery of neuropsychological tests was utilized to assess the association between genetic transmission and the ADHD phenotype. We found significant differences between affected and unaffected children in the WISC block design, PIQ and FSIQ, continuous vigilance, and visual-motor skills, and these variables exhibited a significant heritability. Given the association between these neuropsychological variables and ADHD, and also the high genetic component underlying their transmission in the studied pedigrees, we suggest that these variables be considered as potential cognitive endophenotypes suitable as quantitative trait loci (QTLs) in future studies of linkage and association
Potential cognitive endophenotypes in multigenerational families: segregating ADHD from a genetic isolate
Endophenotypes are neurobiological markers cosegregating and associated with illness. These biomarkers represent a promising strategy to dissect ADHD biological causes. This study was aimed at contrasting the genetics of neuropsychological tasks for intelligence, attention, memory, visual-motor skills, and executive function in children from multigenerational and extended pedigrees that cluster ADHD in a genetic isolate. In a sample of 288 children and adolescents, 194 (67.4%) ADHD affected and 94 (32.6%) unaffected, a battery of neuropsychological tests was utilized to assess the association between genetic transmission and the ADHD phenotype. We found significant differences between affected and unaffected children in the WISC block design, PIQ and FSIQ, continuous vigilance, and visual-motor skills, and these variables exhibited a significant heritability. Given the association between these neuropsychological variables and ADHD, and also the high genetic component underlying their transmission in the studied pedigrees, we suggest that these variables be considered as potential cognitive endophenotypes suitable as quantitative trait loci (QTLs) in future studies of linkage and association