The equilibrium point hypothesis and its application to speech motor control.
The equilibrium point hypothesis and its application to speech motor control.
复制标题
平衡点假设及其在言语运动控制中的应用。
DOI:
10.1044/jshr.3902.365
复制
发表时间:
1996
期刊:
影响因子:
--
通讯作者:
Laboissière,R
中科院分区:
文献类型:
--
作者:
Perrier,P;Ostry,DJ;Laboissière,R
In this paper, we address a number of issues in speech research in the context of the equilibrium point hypothesis of motor control. The hypothesis suggests that movements arise from shifts in the equilibrium position of the limb or the speech articulator. The equilibrium is a consequence of the interaction of central neural commands, reflex mechanisms, muscle properties, and external loads, but it is under the control of central neural commands. These commands act to shift the equilibrium via centrally specified signals acting at the level of the motoneurone (MN) pool. In the context of a model of sagittal plane jaw and hyoid motion based on the λ version of the equilibrium point hypothesis, we consider the implications of this hypothesis for the notion of articulatory targets. We suggest that simple linear control signals may underlie smooth articulatory trajectories. We explore as well the phenomenon of intra-articulator coarticulation in jaw movement. We suggest that even when no account is taken of upcoming context, that apparent anticipatory changes in movement amplitude and duration may arise due to dynamics. We also present a number of simulations that show in different ways how variability in measured kinematics can arise in spite of constant magnitude speech control signals.
登录
查看更多内容
DOI:
10.1016/s0166-4115(08)60645-7
发表时间:
1990
期刊:
Advances in psychology
影响因子:
--
作者:
J. Randall Flanagan;D. Ostry;A. G. Feldman
通讯作者:
A. G. Feldman
DOI:
10.1044/jshr.3602.245
发表时间:
1993
期刊:
Journal of speech and hearing research
影响因子:
--
作者:
S. Stager;C. Ludlow
通讯作者:
C. Ludlow
DOI:
10.1113/jphysiol.1971.sp009454
发表时间:
1971
期刊:
The Journal of Physiology
影响因子:
--
作者:
P. G. Dellow;J. Lund
通讯作者:
J. Lund
影响因子:
2.4
作者:
S. Kiritani;K. Miyawaki;O. Fujimura;J. E. Miller
通讯作者:
S. Kiritani;K. Miyawaki;O. Fujimura;J. E. Miller
DOI:
10.1177/10454411940050010301
发表时间:
1994-01-01
期刊:
CRITICAL REVIEWS IN ORAL BIOLOGY & MEDICINE
影响因子:
--
作者:
HANNAM, AG;MCMILLAN, AS
通讯作者:
MCMILLAN, AS