Impaired corticolingual pathways in patients with or without dysarthria after acute monohemispheric stroke

Khedr, Eman M.; Abdel-Fadeil, Mahmoud R.; El-Khilli, F.; Ibrahim, MA

doi:10.1016/j.neucli.2005.03.003

Cited by 12 publications

(7 citation statements)

References 21 publications

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“…The swallowing process consists of a highly complex and semi‐automatic sequence of events involving extrinsic and intrinsic tongue muscles, leading to protection of the airways during food ingestion (4, 5). Tongue dysfunction may be congenital or caused by neurological diseases or brain injury, such as stroke (6–8), and may have a serious negative impact on health and quality of life. Approximately 50% of stroke patients suffer from dysphagia with a high risk of aspiration of food, which may lead to potentially life‐threatening pneumonia (9–11).…”

mentioning

confidence: 99%

Force and complexity of tongue task training influences behavioral measures of motor learning

Kothari¹,

Svensson²,

Huo³

et al. 2011

European J Oral Sciences

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Relearning of motor skills is important in neurorehabilitation. We investigated the improvement of training success during simple tongue protrusion (two force levels) and a more complex tongue-training paradigm using the Tongue Drive System (TDS). We also compared subject-based reports of fun, pain, fatigue, and motivation between paradigms. Three randomized sessions and one control experiment were performed. Sixteen healthy subjects completed two different 1-h sessions of simple tongue training with 1 N and 3 N, respectively, and one TDS session. After 1 wk, six out of 16 subjects participated as experienced subjects with six naive subjects in a control experiment with 2 × 5-min TDS training separated by a 30-min rest. Performance improved during training in all sessions. The mean ± SEM relative increase in success was 80 ± 12% (1 N), 52 ± 11% (3 N), and 285 ± 45% (TDS). In the control experiment the experienced group performed equal to the last 5 min of their first TDS session and neither group improved during rest. Training with the TDS was rated as more fun, less painful, less fatiguing, and more motivating compared with simple tongue training. In conclusion, force level and complexity of tongue training influences behavioral aspects of tongue motor learning.

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confidence: 99%

Force and complexity of tongue task training influences behavioral measures of motor learning

Kothari¹,

Svensson²,

Huo³

et al. 2011

European J Oral Sciences

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“…Interruption of the cortical innervation from one hemisphere may produce only mild contralateral tongue weakness without dysarthria because of compensatory overactivation of the tongue muscles by the intact uncrossed corticolingual pathway from the normal hemisphere [3]. In the anterior opercular syndrome, bilateral anterior perisylvian lesions interrupt the cortical innervation from both hemispheres and result in severe bilateral tongue weakness and dysarthria, as in our patient.…”

Section: Discussionmentioning

confidence: 45%

Dysarthria and dysphagia due to the opercular syndrome in multiple sclerosis

Pender

Ferguson

2007

Mult Scler

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“…The process of swallowing involves a complex and semi‐automatic sequence of events involving extrinsic and intrinsic tongue muscles, guarding the airway during food ingestion . Dysphagia, dysarthria and cognitive‐associated deficits are common tongue dysfunctions in patients with acquired brain injury (ABI) such as stroke and traumatic brain injury . These dysfunctions negatively influence health and quality of life .…”

Section: Introductionmentioning

confidence: 99%

“…Dysphagia, dysarthria and cognitive‐associated deficits are common tongue dysfunctions in patients with acquired brain injury (ABI) such as stroke and traumatic brain injury . These dysfunctions negatively influence health and quality of life . Moreover, dysphagia is multifactorial in nature and involves the malfunction of many different muscles (skeletal and smooth muscles) and cranial nerves affecting oral, pharyngeal and oesophageal stages .…”

Section: Introductionmentioning

confidence: 99%

Effect of transcranial direct current stimulation on neuroplasticity in corticomotor pathways of the tongue muscles

Kothari

Stubbs

Figlewski

et al. 2017

J of Oral Rehabilitation

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The aim of this study is to investigate effects of transcranial direct current stimulation (tDCS) on neuroplasticity in corticomotor pathways related to tongue muscles evoked by a training task using the tongue drive system (TDS). Using a crossover design, 13 healthy participants completed two sessions of tDCS while performing 30 min of TDS training. Sessions were spaced at least 2 weeks apart and participants randomly received anodal and sham tDCS stimulation in the first session and the other condition in the second session. Single and paired pulse transcranial magnetic stimulation was used to elicit motor evoked potentials (MEPs) of the tongue at three time-points: before, immediately after and 30 min after training. Participant-based reports of fun, pain, fatigue and motivation, level of difficulty and effort were evaluated on numerical rating scales. There was no consistent significant effect of anodal and sham stimulation on single or paired pulse stimulation MEP amplitude immediately or 30 min after TDS training. Irrespective of tDCS type, training with TDS induced cortical plasticity in terms of increased MEP amplitudes for higher stimulus intensities after 30 min compared with before and immediately after training. Participant-based reports revealed no significant difference between tDCS conditions for level of fun, fatigue, motivation, difficulty and level of effort but a significant increase in pain in the anodal condition, although pain level was low for both conditions. In conclusion, tongue MEP amplitudes appear to be sensitive to training with the tongue using TDS; however, anodal tDCS does not have an impact on training-evoked neuroplasticity of tongue corticomotor pathways.

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Impaired corticolingual pathways in patients with or without dysarthria after acute monohemispheric stroke

Cited by 12 publications

References 21 publications

Force and complexity of tongue task training influences behavioral measures of motor learning

Force and complexity of tongue task training influences behavioral measures of motor learning

Dysarthria and dysphagia due to the opercular syndrome in multiple sclerosis

Effect of transcranial direct current stimulation on neuroplasticity in corticomotor pathways of the tongue muscles

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