Can EEG asymmetry patterns predict future development of anxiety and depression?

Blackhart, Ginette C.; Minnix, Jennifer A.; Kline, John P.

doi:10.1016/j.biopsycho.2005.06.010

Cited by 170 publications

(117 citation statements)

References 23 publications

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“…Our results provide support for the notion that right DLPFC alterations may be involved in the generation of impairments in attentional disengagement from emotional information, a commonly observed problem in emotional disorders that is linked to sustained negative affect and emotional dysregulation (e.g., Sanchez et al, 2013). Specifically, attentional disengagement impairments observed in emotional disorders (De Raedt & Koster, 2010) may be lateralized to the right DLPFC, which would be related to hemispheric imbalances in this area, as commonly reported by previous research (e.g., Blackhart, Minnix, & Kline, 2006;Debener et al, 2000;Gotlib, 1998).…”

mentioning

confidence: 65%

Effects of tDCS over the right DLPFC on attentional disengagement from positive and negative faces: An eye-tracking study

Sánchez

Vanderhasselt

Baeken

et al. 2016

Cogn Affect Behav Neurosci

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The aim of this study was to increase insight in the neural substrates of attention processes involved in emotion regulation. The effects of right dorsolateral prefrontal cortex (i.e., DLPFC) stimulation on attentional processing of emotional information were evaluated. A novel attention task allowing a straightforward measurement of attentional engagement toward, and attentional disengagement away from emotional faces was used. A sample of healthy participants received 20 minutes of active and sham anodal transcranial direct current stimulation (i.e., tDCS) applied over the right DLPFC on 2 separate days and completed the attention task after receiving real or sham stimulation. Compared to sham stimulation, tDCS over the right DLPFC led to impairments in attentional disengagement from both positive and negative faces. Findings demonstrate a causal role of right DLPFC activity in the generation of attentional impairments that are implicated in emotional disturbances such as depression and anxiety.

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mentioning

confidence: 65%

Effects of tDCS over the right DLPFC on attentional disengagement from positive and negative faces: An eye-tracking study

Sánchez

Vanderhasselt

Baeken

et al. 2016

Cogn Affect Behav Neurosci

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“…such outcomes might be interpreted as an unbalance in neural activity before the object fall. tradicionally, the frontal is associated to different planning and behavioral processes, such as emotional answers like anxiety, worry or expectation, all involving cognition and goal-directed motor [26][27][28][29][30] .…”

Section: Resultsmentioning

confidence: 99%

Cortical asymmetry: catching an object in free fall

Velasques

Machado

Portella

et al. 2007

Arq. Neuro-Psiquiatr.

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-the main goal of the present study was to analyze theta asymmetry through quantitative electroencephalography (qEEG) when individuals were exposed to a sequential motor task, i.e. catching a ball. the sample was composed of 23 healthy subjects, male and female, between 25 and 40 years of age. A two-way factor AnovA was applied to compare pre and post moments related to the balls' drop and scalp regions (i.e., frontal and parieto-occipital cortices). the first analysis of the frontal region compared electrodes in the left, right and left/right hemispheres combined, with the frontal midline electrode (FZ) included in the analysis. the results showed moment and region main effects. the second analysis compared left versus right hemisphere without the FZ site. the findings demonstrated an interaction effect between moment and region. the first parieto-occipital analysis, comparing left, right and central regions, with PZ included in all regions, showed main effects of moment and region. the second analysis, comparing left, right (without Pz) and central regions strictly demonstrated a region main effect. thus, we observed an asymmetric pattern in the frontal cortex (i.e., planning and response selection) when the subjects were waiting for the balls' drop. Moreover, the left hemisphere seems to engage differently from the other regions when the central nervous system needs to prepare for a motor action. on the other hand, the parieto-occipital cortex, which is related to attentive processes, demonstrated a more asymmetric activity towards the right region which implies a participation of this area in cognitive strategies in this particular task. taken together, we concluded that the adopted experimental approach can be useful to explore several others directions combining sensorimotor integration tasks with different pathologies, such as depression, Alzheimer's and Parkinson's diseases.KEy words: motor control, sensory-motor integration, asymmetry, qEEG.Assimetria cortical: apreensão de um objeto em queda livre rEsuMo -o objetivo do presente experimento foi avaliar medidas de assimetria na banda teta através da electroencefalografia quantitativa (EEGq) durante a realização da atividade motora de apreensão de uma bola em queda livre. A amostra constituiu-se de 23 sujeitos saudáveis de ambos os sexos, faixa etária entre 25 e 40 anos. AnovA two-way foi utilizada para comparar os momentos pré e pós relacionados à queda da bola, e às regiões do escalpo (córtex frontal e parieto-occipital). A primeira análise da região frontal comparou eletrodos nos hemisférios esquerdo, direito e esquerdo/direito combinados, incluindo na análi-se o eletrodo frontal mediano (FZ). o resultado demonstrou um efeito principal para momento e região. A segunda análise comparou os hemisférios direito e esquerdo, sem o eletrodo FZ. neste achado verificouse um efeito principal para a interação entre os fatores momento e região. A primeira análise realizada na região parieto-occipital comparou as regiões esquerda, direita e central, com PZ...

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“…Alphawaves have been shown to be inversely correlated with brain activity [18] and a reduction in left hemisphere activity is associated with anxiety and depression. The physiological measure, FA, was chosen because it has been used as an objective measure of depression and anxiety; depressed and anxious individuals tend to exhibit greater relative right anterior EEG or negative asymmetry [19][20][21][22][23], FA can predict future development of anxiety and depression [24], and this asymmetry has been shown to be a moderately stable individual difference in adults, irrespective of sex and history of depression [25,26]. A psychological measure, the Profile of Mood States (POMS) self-assessment questionnaire, was chosen because it is a widely used means of determining mood state [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Light and smell stimulus protocol reduced negative frontal EEG asymmetry and improved mood

et al. 2017

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Light and smell have both been shown to induce beneficial changes to human psychophysiology. Bright light therapy has been shown to have a positive impact on anxiety and depression and smell has also been shown to have positive effects on mood, stress, anxiety and depression. We developed a method for the delivery of integrated light and smell stimulation to try to optimise positive psychophysiological benefit. We tested its effectiveness on a physiological measure, EEG frontal alpha asymmetry (FA) and a psychological paradigm, the POMS test, both of which have been used as a measure of emotional state and mood. Light, pleasant smell, combined light+smell and a no stimulus control were delivered for 90s while the frontal alpha asymmetry (FA) was monitored. Smell and light+smell caused significant reductions in negative FA during stimulation. Exposure to a longer 15 min nonadaptive light+smell stimulus protocol reduced negative FA and decreased negative affect (POMS). The effects were greater in the negative FA group. Both the physiological (EEG) and psychometric (POMS) data indicate that integrated light and smell stimulation can reduce negative affect and reduce a marker for anxiety/ depression. This light+smell sensory stimulation protocol could offer a safe treatment for depression/anxiety.

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Can EEG asymmetry patterns predict future development of anxiety and depression?

Cited by 170 publications

References 23 publications

Effects of tDCS over the right DLPFC on attentional disengagement from positive and negative faces: An eye-tracking study

Effects of tDCS over the right DLPFC on attentional disengagement from positive and negative faces: An eye-tracking study

Cortical asymmetry: catching an object in free fall

Light and smell stimulus protocol reduced negative frontal EEG asymmetry and improved mood

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