15 documents found, page 1 of 2
Personalized language training and bi-hemispheric tDCS improve language connect...
Carvalho, Sandra; Mendes, Augusto J.; Pinto, José Miguel Soares Pereira; Sampaio, Adriana; Leite, JorgeBackground: Transcranial direct current stimulation (tDCS) has emerged as a promising neuromodulatory tool for language rehabilitation in chronic aphasia. However, the effects of bi-hemispheric, multisite stimulation remain largely unexplored, especially in people with chronic and treatment-resistant language impairments. The goal of this study is to look at the effects on behavior and brain activity of an indi...
Transcranial Direct Current Stimulation decreases P3 amplitude and inherent del...
Mendes, Augusto J.; Galdo-Álvarez, Santiago; Lema, Alberto; Carvalho, Sandra; Leite, JorgeThe inability to wait for a target before initiating an action (i.e., waiting impulsivity) is one of the main features of addictive behaviors. Current interventions for addiction, such as transcranial Direct Current Stimulation (tDCS), have been suggested to improve this inability. Nonetheless, the effects of tDCS on waiting impulsivity and underlying electrophysiological (EEG) markers are still not clear. Ther...
Functional neuroimaging and behavioral correlates of multisite tDCS as an add-o...
Mendes, Augusto J.; Lema, Alberto; Soares, José Miguel; Sampaio, Adriana; Leite, Jorge; Carvalho, SandraMary, who experienced non-fluent aphasia as a result of an ischemic stroke, received 10 years of personalized language training (LT), resulting in transient enhancements in speech and comprehension. To enhance these effects, multisite transcranial Direct Current Stimulation (tDCS) was added to her LT regimen for 15 sessions. Assessment using the Reliable Change Index showed that this combination improved her le...
Tailoring transcranial alternating current stimulation based on endogenous even...
Mendes, Augusto J.; Lema, Alberto; Carvalho, Sandra; Leite, JorgeBackground Transcranial alternating current stimulation (tACS) is a brain stimulation method for modulating ongoing endogenous oscillatory activity at specified frequency during sensory and cognitive processes. Given the overlap between event-related potentials (ERPs) and event-related oscillations (EROs), ERPs can be studied as putative biomarkers of the effects of tACS in the brain during cognitive/sensory ta...
Efficacy and safety of repetitive transcranial magnetic stimulation and transcr...
Mendes, Augusto J.; Leite, Jorge; Fernandes, Sara M.; Rodrigues, Pedro F. S.; Conde, Ana; Rocha, MagdaRepetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS) are two of the most used non-pharmacological interventions for Alzheimer's Disease (AD). However, most of the clinical trials have focused on evaluating the effects on global cognition and not on specific cognitive functions. Therefore, considering that memory loss is one of the hallmark symptoms of AD, we aim...
Efficacy and safety of TMS and tDCS in memory deficits Alzheimer's disease
Mendes, Augusto J.; Rocha, Magda; Rodrigues, Pedro F. S.; Fernandes, Sara M.; Conde, Ana; Leite, JorgeTranscranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS) are promising non-pharmacological therapeutic options for Alzheimer’s´ Disease (AD). The aim of this meta-analysis is to assess which intervention (i.e., TMS or tDCS) is more effective for memory losses in people with AD. As secondary outcome, safety will be addressed. [...]
Transcranial direct current stimulation decreases P3 amplitude and inherent Del...
Mendes, Augusto J.; Galdo-Álvarez, Santiago; Lema, Alberto; Carvalho, Sandra; Leite, JorgeThe inability to wait for a target before initiating an action (i.e., waiting impulsivity) is one of the main features of addictive behaviors. Current interventions for addiction, such as transcranial Direct Current Stimulation (tDCS), have been suggested to improve this inability. Nonetheless, the effects of tDCS on waiting impulsivity and underlying electrophysiological (EEG) markers are still not clear. Ther...
Modulation of the cognitive event-related potential P3 by transcranial direct c...
Mendes, Augusto J.; Pacheco-Barrios, Kevin; Lema, Alberto; Gonçalves, Óscar F.; Fregni, Felipe; Carvalho, Sandra; Leite, JorgeTranscranial direct current stimulation (tDCS) has been widely used to modulate cognition and behavior. However, only a few studies have been probing the brain mechanism underlying the effects of tDCS on cognitive processing, especially throughout electrophysiological markers, such as the P3. This meta-analysis assessed the effects of tDCS in P3 amplitude and latency during an oddball, n-back, and Go/No-Go task...
Mind wandering: Tracking perceptual decoupling, mental improvisation, and menta...
Gonçalves, Óscar F.; Silva, Mariana Rachel Dias da; Carvalho, Sandra; Coelho, Patrícia; Lema, Alberto; Mendes, Augusto J.; Branco, Diogo; Collus, JorgeBackground: Mind wandering is a prevalent phenomenon. However, the concept of mind wandering is associated with distinct and often orthogonal concepts, and research- ers are still debating the best strategies to gain access to mind-wandering processes. Nonetheless, there is a progressive acknowledgment that mind wandering is a multi- dimensional and heterogeneous construct. We argue that to fully understand min...
Modulation of the cognitive event-related potential P3 by transcranial direct c...
Mendes, Augusto J.; Pacheco-Barrios, Kevin; Lema, Alberto; Gonçalves, Óscar F.; Fregni, Felipe; Leite, Jorge; Carvalho, SandraTranscranial direct current stimulation (tDCS) has been widely used to modulate cognition and behavior. However, only a few studies have been probing the brain mechanism underlying the effects of tDCS on cognitive processing, especially throughout electrophysiological markers, such as the P3. This meta-analysis assessed the effects of tDCS in P3 amplitude and latency during an oddball, n-back, and Go/No-Go task...