| 말 산출에서 피질하 구조의 역할 |
| 김선우, 윤지혜
a,b
장수은
c
손영호
d
조성래
e
김향희
a,e |
| 연세대학교 대학원 언어병리학협동과정
, 삼성서울병원 신경과
, 미시간주립대학교 의사소통과학 및 장애학과
연세대학교 의과대학 신경과학교실
d
, 연세대학교 의과대학 재활의학교실 및 재활의학연구소
e |
| The Role of Subcortical Regions in Speech Production |
| Sun Woo Kim |
| Graduate Program in Speech and Language Pathology
, Yonsei University, Seoul, Korea
Department of Neurology
b
, Samsung Medical Center, Seoul, Korea
Department of Communicative Sciences and Disorders
c
, Michigan State University, East Lansing, Michigan, USA
Department of Neurology
d
, Yonsei University College of Medicine, Seoul, Korea
Department and Research Institute of Rehabilitation Medicine
e
, Yonsei University College of Medicine, Seoul, Korea |
|
|
|
|
| Abstract |
Background: Speech production requires accurate coordination of the speech musculature, and is dependent upon
cooperation among cortical and subcortical structures. Multiple subcortical structures, including the basal ganglia,
thalamus, and cerebellum, are involved in several parallel and segregated cortical-subcortical-cerebellum circuits. These
circuits serve critical functions in integrating neural networks that modulate speech motor behaviors. Previous studies
on speech disorders linked to subcortical lesions have been limited to perceptual evaluations of speech in patients with
lesions. However, more recent studies using neuroimaging have confirmed the results of the lesion studies and provided
further evidence of the important contributions of the subcortical structures to speech motor control.
Methods: We reviewed recent research literature on both behavioral and functional neuroimaging to reveal the role of
subcortical structures in speech production. A review of this topic was conducted by searching the literature and
electronic databases.
Results: Based on numerous articles, we found that the basal ganglia, thalamus, and cerebellum make different
contributions to the modulation of speech-related variables. The cerebellum is the structure that is most strongly
associated with speech rate, complexity, and timing.
Conclusions: We conclude that the subcortical structures may play critical functions in speech production. The function
of each structure involves the stimulation of cortical regions through the neural circuits and neurotransmitters. Thus, the
function of the subcortical structures should be understood within the paradigm of neural networks. Key Words: Speech production, Basal ganglia, Thalamus, Cerebellum, Neural circuit |
|
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