The effects of trans-cranial direct current stimulation intervention on fear: A systematic review of literature

Yosephi, Mohaddeseh Hafez; Ehsani, Fatemeh; Daghiani, Maryam; Zoghi, Maryam; Jaberzadeh, Shapour

doi:10.1016/j.jocn.2019.01.011

Cited by 13 publications

(8 citation statements)

References 19 publications

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“…For example, some studies proposed that the right DLPFC played a key role in negative emotion regulation STIMULATION OF LEFT DLPFC ENHANCEMENT 7 (Feeser et al, 2014;Heller et al, 2013), which may have potential to regulate aversive feelings during task execution process. While others suggested the right DLPFC excitability showed less sensitiveness to modulate negative emotion such that anodal tDCS of that brain region could not efficiently reduce fear response and led to slower gaze disengagement from emotional faces (Sanchez-Lopez et al, 2018;Yosephi et al, 2019). Focusing on the neural correlates of procrastination, some studies found that the relationship between trait procrastination and right DLPFC spontaneous activity or structural change (Wang et al, 2022;W.…”

Section: Discussionmentioning

confidence: 99%

Stimulation of left dorsolateral prefrontal cortex enhances willingness for task completion by amplifying task outcome value.

Xu¹,

Zhang²,

Zhu³

et al. 2023

Journal of Experimental Psychology: General

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Procrastination, an irrational delay of intended action, has caused harms in many life domains. Although procrastination has a robust link with the dorsolateral prefrontal cortex (DLPFC), the causal role of DLPFC in this behavior remains unclear. A recent temporal decision model (TDM) proposed that people pit task aversiveness against outcome value to decide to procrastinate or not. In short, people would procrastinate if task aversiveness has a stronger effect than outcome value. According to the TDM, the DLPFC might reduce procrastination by inhibiting task aversiveness, or amplifying outcome value, or both. The present study tested those possibilities by investigating whether brain stimulation on DLPFC changes procrastination and its underlying mechanism. One hundred and three participants with high procrastination were randomly assigned to receive either active or sham stimulation over the left (active, n = 27; sham, n = 27) or right (active, n = 25; sham, n = 24) DLPFC and rated task aversiveness, outcome value and task-execution willingness toward their self-planned real-life tasks before and after stimulation. We found that active stimulation of the left DLPFC significantly boosted task-execution willingness. This left DLPFC stimulation also changed subjects' evaluation of tasks such that decreasing task aversiveness and increasing outcome value. Causal mediation analyses further revealed that stimulation of the left DLPFC enhances willingness for task completion through increasing outcome value. Overall these results provide the first evidence that neuromodulation of the left DLPFC could improve timely task-execution willingness via increasing the outcome value, which offers new insights for treating individuals with severe or even pathological procrastination.

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Section: Discussionmentioning

confidence: 99%

Stimulation of left dorsolateral prefrontal cortex enhances willingness for task completion by amplifying task outcome value.

Xu¹,

Zhang²,

Zhu³

et al. 2023

Journal of Experimental Psychology: General

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“…Most of these studies have focused on stimulating the DLPFC or VMPFC due to the relatively accessible nature of these regions. For broader reviews that include rodents, other measures of fear, stress, or stress reactivity, and other neurostimulation techniques besides tDCS on this topic, see (Marković et al, 2021; Smits et al, 2020; Tan et al, 2019; Yosephi et al, 2019) as well as (Vicario, Salehinejad, et al, 2020) for an overview on the use of tDCS in anxiety disorders…”

Section: Tdcs-augmented Threat and Safety Processingmentioning

confidence: 99%

Is there a neuroscience-based, mechanistic rationale for transcranial direct current stimulation as an adjunct treatment for posttraumatic stress disorder?

Faucher¹,

Doherty²,

Philip³

et al. 2021

Behavioral Neuroscience

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It is well-known that there is considerable variation in the effectiveness of evidence-based treatments for psychiatric disorders, and a continued need to improve the real-world effectiveness of these treatments. In the last 20+ years the examination of noninvasive brain stimulation techniques for psychiatric treatment has increased dramatically. However, in order to test these techniques for effective therapeutic use, it is critical to understand (a) (what are) the key neural circuits to engage for specific disorders or clusters of symptoms, and (b) (how) can these circuits be reached effectively using neurostimulation? Here we focus on the research toward the application of transcranial direct current stimulation (tDCS) for posttraumatic stress disorder (PTSD). tDCS is a portable and inexpensive technique that lends itself well to be combined with, and thus potentially augment, exposure-based treatment for PTSD. In this review, we discuss the behavioral model of threat and safety learning and memory as it relates to PTSD, the underlying neurobiology of PTSD, as well as the current understandings of tDCS action, including its limitations and opportunities. Through this lens, we summarize the research on the application of tDCS to modulated threat and safety learning and memory to date, and propose new directions for its future research.

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“…Because of its non-invasive nature, highly controlled sham condition, and relatively low cost compared to other neuromodulation techniques, tDCS quickly arises as a promising therapeutic tool. Indeed, many several systematic reviews and meta-analyses of randomized controlled trials indicated the safety and therapeutic efficacy of tDCS for a wide range of mental disorders (for a review, see Tortella et al, 2015), including, among others, depression and mood disorders (Borrione et al, 2018;Dondé et al, 2018;Razza et al, 2020), anxiety disorders (e.g., Stein et al, 2020;Yosephi et al, 2019), psychotic disorders (e.g., Lee et al, 2018), pain-related disorders (e.g., Zortea et al, 2019), and eating disorders (e.g., Dalton et al, 2018). Hence, this literature has prompted an exceptionally positive prospect vis-à-vis tDCS as a therapeutic tool.…”

Section: A Systematic Review Of the Sham-controlled Studies In Healthmentioning

confidence: 99%

The Impact of transcranial Direct Current Stimulation on Rumination: A Systematic Review of the Sham-controlled Studies in Healthy and Clinical Samples

Hoebeke¹,

Desmedt²,

Ozcimen³

et al. 2020

Preprint

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Objective: Broadly considered as a transdiagnostic feature of psychological disorders, rumination is associated with slower treatment response, slower rates of recovery, and higher rates of relapse. Accordingly, research has focused on the development of interventions to alleviate rumination. Recently, transcranial Direct Current Stimulation (tDCS) has emerged as a promising tool to do so. Yet, study-to-study variations in stimulation and research protocols preclude a comprehensive understanding of the impact of tDCS on rumination.Methods: We performed a systematic review of sham-controlled tDCS studies targeting rumination among healthy participants or patients with psychiatric disorders, to investigate the effectiveness of tDCS in reducing rumination, and identifying the most desirable combination of stimulation parameters and research protocols to do so.Results: Five out of the nine studies included found a significant effect of tDCS on rumination. However, heterogeneity in results and study designs preclude any definite statement about the impact of tDCS on rumination. Methodological caveats were discussed, and some guidelines for future studies were established.Conclusion: Transcranial Direct Current Stimulation is a promising therapeutic tool to modify transdiagnostic mechanisms like rumination. However, the field needs more extensive and continuous efforts to improve the current methodological caveats and study limitations. This systematic review identifies the existing literature's strengths and weaknesses, providing valuable insights for future efforts.

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The effects of trans-cranial direct current stimulation intervention on fear: A systematic review of literature

Cited by 13 publications

References 19 publications

Stimulation of left dorsolateral prefrontal cortex enhances willingness for task completion by amplifying task outcome value.

Stimulation of left dorsolateral prefrontal cortex enhances willingness for task completion by amplifying task outcome value.

Is there a neuroscience-based, mechanistic rationale for transcranial direct current stimulation as an adjunct treatment for posttraumatic stress disorder?

The Impact of transcranial Direct Current Stimulation on Rumination: A Systematic Review of the Sham-controlled Studies in Healthy and Clinical Samples

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