Although people who suffer from<unk><unk><unk>  lose their speech ability, their singing ability is usually preserved. Their preserved ability to sing might result from their preserved brain circuit for singing lyrics, which suggests that singing and speaking involve different neural pathway in human brain. As<unk><unk><unk>  is usually caused by lesions in patients’ left hemisphere, the undamaged right hemisphere is regarded by researchers as the reason why patients preserve their ability to sing (Jeffries et al., 2003). Patients who undergo brain imaging scan also show an increased right hemispheric activity when they are singing than speaking. Therefore, the substitution of the right hemisphere for the damaged left hemisphere is one of the possible mechanisms of<unk> . In terms of the training of the right hemisphere,<unk>  therapy techniques involving melodic components, such as singing and vocal intonation, are always discussed by researchers. Since pitch difference in language is perceived by the right hemisphere, singing or intoning phrases may allow patients to use the neural pathway in their right hemisphere. As many patients have been noted to have an improvement in speech production after receiving therapeutic singing or vocal intonation practice, some researchers have suggested that these techniques are able to activate their right hemispheric regions potentially responsible for language processing Although many studies suggest that singing in<unk>  therapy can improve<unk><unk> <unk>  patients’ speech production, the study by Stahl et al. shows that rhythm, instead of singing, is the key element in<unk>  therapy that benefits<unk>  patients. Therefore, rhythmic components in<unk>  therapy might explain why<unk>  therapy can benefit<unk><unk> <unk>  patients. One example is the left-hand tapping used in Melodic Intonation Therapy (MIT). Since this technique also serves as a way to stimulate the right hemisphere, Schlaug et al. speculate that left-hand tapping may favor verbal production indirectly. They further propose that hand movements and articulation might share a mutual neurological network in the right hemisphere because hand movements are often in a tight relationship with one's articulation in daily life. Therefore, left-hand tapping is likely to benefit<unk>  patients' articulation by engaging the neurological network that coordinates both hand movement and articulatory movement in patients’ right hemisphere.
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Music therapy for Alzheimer's disease
Video game rehabilitation
Online speech therapy
Clubhouse model of psychosocial rehabilitation
Integrated cognitive assessment
Psychological therapies for dementia
Virtual reality in telerehabilitation