Transcranial direct current stimulation to improve naming abilities of persons with chronic aphasia: A preliminary study using individualized based protocol

Basat, Adi Lifshitz Ben; Gvion, Aviah; Vatine, Jean-Jacques; Mashal, Nira

doi:10.1016/j.jneuroling.2015.09.004

Cited by 13 publications

(4 citation statements)

References 69 publications

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“…However, maximal language gains could be obtained by differentiating task, length, and number of sessions according to patients’ condition and needs. Several studies included in this review also comprehended a follow-up examination of the patients’ progress, essential to detect the long-term effects of tDCS ( Fiori et al, 2011 , 2013 , 2019 ; Fridriksson et al, 2011 ; Marangolo et al, 2013a , b ; Cipollari et al, 2015 ; Shah-Basak et al, 2015 ; Basat et al, 2016 ; Woodhead et al, 2018 ).…”

Section: Discussionmentioning

confidence: 99%

“…The studies here described included patients with different types of language impairments. Patients presented with both fluent and non-fluent aphasia, and in several cases anomia ( Vines et al, 2009 , 2011 ; Flöel et al, 2011 ; Fridriksson et al, 2011 , 2018b ; Richardson et al, 2015 ; Basat et al, 2016 ) or a deficit in spontaneous speech production ( Marangolo et al, 2014a ; Guillouët et al, 2020 ). Apraxia of speech was also often found ( Marangolo et al, 2011 , 2013a ; De Aguiar et al, 2015a ).…”

Section: Patientsmentioning

confidence: 99%

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Transcranial Direct-Current Stimulation and Behavioral Training, a Promising Tool for a Tailor-Made Post-stroke Aphasia Rehabilitation: A Review

Zettin

Bondesan

Nada

et al. 2021

Front. Hum. Neurosci.

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Aphasia is an acquired language disorder resulting from damage to portions of the brain which are responsible for language comprehension and formulation. This disorder can involve different levels of language processing with impairments in both oral and written comprehension and production. Over the last years, different rehabilitation and therapeutic interventions have been developed, especially non-invasive brain stimulation (NIBS) techniques. One of the most used NIBS techniques in aphasia rehabilitation is the Transcranial Direct-Current Stimulation (tDCS). It has been proven to be effective in promoting a successful recovery both in the short and the long term after a brain injury. The main strength of tDCS is its feasibility associated with relatively minor side effects, if safely and properly administered. TDCS requires two electrodes, an anode and a cathode, which are generally placed on the scalp. The electrode montage can be either unipolar or bipolar. The main aim of this review is to give an overview of the state of the art of tDCS for the treatment of aphasia. The studies described included patients with different types of language impairments, especially with non-fluent aphasia and in several cases anomia. The effects of tDCS are variable and depend on several factors, such as electrode size and montage, duration of the stimulation, current density and characteristics of the brain tissue underneath the electrodes. Generally, tDCS has led to promising results in rehabilitating patients with acquired aphasia, especially if combined with different language and communication therapies. The selection of the appropriate approach depends on the patients treated and their impaired language function. When used in combination with treatments such as Speech and Language Therapy, Constraint Induced Aphasia Therapy or Intensive Action Treatment, tDCS has generally promoted a better recovery of the impaired functions. In addition to these rehabilitation protocols, Action Observation Therapy, such as IMITAF, appeared to contribute to the reduction of post-stroke anomia. The potential of combining such techniques with tDCS would would therefore be a possibility for further improvement, also providing the clinician with a new action and intervention tool. The association of a tDCS protocol with a dedicated rehabilitation training would favor a generalized long-term improvement of the different components of language.

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Section: Discussionmentioning

confidence: 99%

Section: Patientsmentioning

confidence: 99%

Transcranial Direct-Current Stimulation and Behavioral Training, a Promising Tool for a Tailor-Made Post-stroke Aphasia Rehabilitation: A Review

Zettin

Bondesan

Nada

et al. 2021

Front. Hum. Neurosci.

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“…In the anodal-tDCS condition, a 1.5 mA current for 20-min was applied through 5 cm × 7 cm electrode sponges, saturated in 10 mL of 0.9% NaCl solution, using a Magstim HDCStim device. The anodal-electrode was placed over the right inferior frontal gyrus, determined to be at the intersection of T4-Fz and F8-Cz ( 29 ), and secured with a hairnet. The cathodal electrode was placed on the left deltoid muscle ( 30 ).…”

Section: Methodsmentioning

confidence: 99%

Does Right-Hemispheric Anodal tDCS Enhance the Impact of Script Training in Chronic Aphasia? A Single-Subject Experimental Study

Figeys

Kim

Hopper

2022

Front. Rehabilit. Sci.

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Background: Script training is an aphasia treatment approach that has been demonstrated to have a positive effect on communication of individuals with aphasia; however, it is time intensive as a therapeutic modality. To augment therapy-induced neuroplasticity, transcranial direct current stimulation (tDCS) may be implemented. tDCS has been paired with other speech-language treatments, however, has not been investigated with script training.Aims: The purpose of this study was to determine if tDCS improves communication proficiency when paired with script training, compared to script training alone.Methods and Procedures: A single-subject experimental design was implemented with a participant with non-fluent aphasia, using two scripts across treatment conditions: script training with sham-tDCS, and script training with anodal-tDCS. Treatment sessions were 75 min long, administered three times weekly. Anodal tDCS was implemented for 20 min with a current of 1.5 mA over the right inferior frontal gyrus.Results: Large effect sizes were obtained on script mastery for both stimulation conditions (anodal d2 = 9.94; sham d2 = 11.93). tDCS did not improve script accuracy, however, there was a significant improvement in the rate of change of script pace relative to baseline (3.99 seconds/day, p < 0.001) in the anodal tDCS condition.Conclusion: Despite a null tDCS result on accuracy, the script training protocol increased script performance to a near-fluent level of communication. There is preliminary evidence to suggest that tDCS may alter the rate of script acquisition, however, further research to corroborate this finding is required. Implications for future studies are discussed.

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“…The optimal electrode montage in tDCS studies can be identified through initial placement of electrodes in frontal areas (e.g., F3 and F4 according to the international 10-20 EEG measurement system) in early training sessions for a task (e.g., picture naming) by evaluating which particular montage results in greatest post-stimulation accuracy in task measures and neuroimaging measures (Lifshitz Ben Basat et al, 2016;Norise et al, 2017;Shah-Basak et al, 2015). Additionally, current flow to target area can be initially assessed through computational modeling for montage selection (Themistocleous et al, 2021).…”

Section: Intervention Detailsmentioning

confidence: 99%

Investigating NIBS for language rehabilitation in aphasia

et al. 2022

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Purpose: The purpose of this scoping review was to identify and synthesize research on interventions in which noninvasive brain stimulation (NIBS) was used to improve linguistic abilities in individuals with aphasia. NIBS comprising transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS) are emerging technologies with potential to improve the underlying neurobiology of language in brains with stroke-induced lesions.Methods: The results of a systematic search of electronic literature databases were reviewed in CADIMA software by two authors yielding 57 studies published between 2015 and 2022. Selected articles were reviewed for study characteristics, participant characteristics, intervention details, and outcome measures.Results: NIBS is largely used for non-fluent aphasia during the chronic phase of recovery for improving naming and comprehension using picture naming and auditory comprehension of words, commands, and small paragraphs. Standardized test materials are used to measure treatment efficiency, with neuroimaging gradually emerging as an added measure to assess the neurobiological changes arising as a result of treatment induced linguistic recovery. Conclusion:The findings from this scoping review describe the design and delivery of NIBS treatment from subacute to chronic stages of recovery in aphasia. Positive results from heterogenous studies show the potential of NIBS in improving linguistic outcomes for people with aphasia. Large scale clinical trials and systematic reviews should further substantiate our findings of NIBS efficiency for specific language skills (e.g., naming accuracy, sentence production, discourse comprehension).

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Transcranial direct current stimulation to improve naming abilities of persons with chronic aphasia: A preliminary study using individualized based protocol

Cited by 13 publications

References 69 publications

Transcranial Direct-Current Stimulation and Behavioral Training, a Promising Tool for a Tailor-Made Post-stroke Aphasia Rehabilitation: A Review

Transcranial Direct-Current Stimulation and Behavioral Training, a Promising Tool for a Tailor-Made Post-stroke Aphasia Rehabilitation: A Review

Does Right-Hemispheric Anodal tDCS Enhance the Impact of Script Training in Chronic Aphasia? A Single-Subject Experimental Study

Investigating NIBS for language rehabilitation in aphasia

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