The control of balance is crucial for efficiently performing most of our daily motor tasks, such as those involving goal-directed arm movements or whole body displacement. The purpose of this article is twofold. First...The control of balance is crucial for efficiently performing most of our daily motor tasks, such as those involving goal-directed arm movements or whole body displacement. The purpose of this article is twofold. Firstly, it is to recall how balance can be maintained despite the different sources of postural perturbation arising during voluntary movement. The importance of the so-called "anticipatory postural adjustments"(APA), taken as a "line of defence" against the destabilizing effect induced by a predicted perturbation, is emphasized. Secondly, it is to report the results of recent studies that questioned the adaptability of APA to various constraints imposed on the postural system. The postural constraints envisaged here are classified into biomechanical(postural stability, superimposition of motor tasks),(neuro) physiological(fatigue), temporal(time pressure) and psychological(fear of falling, emotion). Overall, the results of these studies point out the capacity of the central nervous system(CNS) to adapt the spatio-temporal features of APA to each of theseconstraints. However, it seems that, depending on the constraint, the "priority" of the CNS was focused on postural stability maintenance, on body protection and/or on maintenance of focal movement performance.展开更多
Background: Medical staff provide care to spouses of terminal cancer patients through trial and error by meeting their various support needs and spousal factors regarding their anticipatory grief. Studies on the assoc...Background: Medical staff provide care to spouses of terminal cancer patients through trial and error by meeting their various support needs and spousal factors regarding their anticipatory grief. Studies on the association between spousal characteristics and anticipatory grief have been inconclusive;additionally, there has been insufficient research on support needs for anticipatory grief of spouses. This study aimed to explore the spousal characteristics and social support needs predicting anticipatory grief in spouses of patients with cancer at the end of life. Methods: This was a cross-sectional study. Eligible spouses (n = 102) completed a self-report questionnaire in two hospitals with palliative care units in Japan. The questionnaire included demographic information, a tool assessing social support needs of spouses, and the Anticipatory Grief Scale for Family Caregivers. Results: Simple regression analyses indicated that patient age, chemotherapy, no treatment, ECOG PS3, children aged under 20 years, total score of “social support needs regarding the disease and treatment of the patients” and subscale scores (“medical condition and cure,” “daily life and social support,” and “intimacy and employment”), and total score of “social support needs of the spouses” and subscale scores (“family psychological issues and social support” and “intimacy, employment, and society”) were significant variables (all p p Conclusions: Patients having no experience of “chemotherapy” and higher “social support needs of the spouses” in Model 1, and greater spousal needs of “family psychological issues and social support” in Model 2 were significant predictors of severe anticipatory grief. Medical staff should pay attention to these risk factors that predict anticipatory grief among spouses.展开更多
Background: Obstacle crossing is the common reason of falling in older adults. Anticipatory postural adjustments phase (APAP) and reaction time phase (RTP) are two important factors in falling prediction. According to...Background: Obstacle crossing is the common reason of falling in older adults. Anticipatory postural adjustments phase (APAP) and reaction time phase (RTP) are two important factors in falling prediction. According to previous studies, these parameters increase in older adults at high risk falling. This study explored the effect of aging on APAP and RTP in obstacle negotiation. Method: Nineteen older adults (mean age: 66.73 ± 3.38 years) and twelve young adults (mean age: 26.5 ± 4.37 years), participated in this study. Participants take part in gait initiation task from a starting position on a force platform under two conditions, unobstructed and obstructed (obstacle placed at 1 m from the initial position). RTP and APAP were measured and Timed “Up” & “Go” test (TUG) as a functional test, recorded for all participants. Results: There was no significant difference between healthy young and older adults in RTP and APAP in the unobstructed and obstructed conditions. TUG test was the most sensitive indicator of falling between two groups. Conclusion: Information processing capacity for motor planning and proper strategy selection in pre crossing phase of obstacle negotiation did not have significant difference in healthy old and young groups. Maybe in respect to select healthy older adults without any neurological disorders and cognitive impairments, low attention demand of well learned walking and obstacle negotiation tasks, lead to perform both postural task more automatically and without any significant difference detection.展开更多
Individuals frequently generate emotion during the anticipation process and the anticipatory emotion has an important adaptive significance, especially the negative anticipative emotion. Many researches used conscious...Individuals frequently generate emotion during the anticipation process and the anticipatory emotion has an important adaptive significance, especially the negative anticipative emotion. Many researches used conscious emotion regulation strategy and successfully reduced negative anticipatory emotion. However, it is costly for our limited cognition. In the present study, we used sentence unscrambling tasks to prime unconscious emotion control goal and investigated its effect on anticipatory anxiety, including experience and physiological activity. The results showed that 1) relative to anticipating neutral images, participations’ anxiety experience and skin conductance level were higher when anticipating negative and unknown images;2) participants who had a unconscious emotion control goal primed achieved the same decrease in skin conductance as those explicitly instructed to reappraise, compared to a control group;3) heart rate was not affected by experiment condition and anticipation type. Together, these findings suggest that unconscious emotion regulation may provide an effective mean of regulating negative anticipatory emotion.展开更多
This article addresses the need for anticipatory guidance about death and death education with young children. Children often experience the death of an immediate family member before the age of ten. This number incre...This article addresses the need for anticipatory guidance about death and death education with young children. Children often experience the death of an immediate family member before the age of ten. This number increases if one considers the loss of friends, pets, and other loved ones. However, children experience a death with little or no anticipatory guidance or knowledge about death. Anticipatory guidance can assist the child in having a better understanding of a death when it occurs. Talking about death with children can be difficult for adults. However, it is important to address the topic and realize the impact anticipatory guidance in relation to death can have in assisting with childhood bereavement, anticipatory grief, and anticipatory adaptation. By providing anticipatory education related to death symptoms such as grief, anger, and/or fear, regressive or aggressive behaviors can be prevented or lessened when a death occurs. Age appropriate developmental levels for understanding the concept of death, resources for death education, and literature that can be used for death education are presented. Any resource used for death education with children should be carefully reviewed by the adult for its appropriateness prior to its use.展开更多
It is well known that balance control is affected by aging, neurological and orthopedic conditions. Poor balance control during gait and postural maintenance are associated with disability, falls and increased mortali...It is well known that balance control is affected by aging, neurological and orthopedic conditions. Poor balance control during gait and postural maintenance are associated with disability, falls and increased mortality. Gait initiation-the transient period between the quiet standing posture and steady state walking-is a functional task that is classically used in the literature to investigate how the central nervous system(CNS) controls balance during a whole-body movement involving change in the base of support dimensions and center of mass progression. Understanding how the CNS in able-bodied subjects exerts this control during such a challenging task is a prerequisite to identifying motor disorders in populations with specific impairments of the postural system. It may also provide clinicians with objective measures to assess the efficiency of rehabilitation programs and better target interventions according to individual impairments. The present review thus proposes a state-of-the-art analysis on:(1) the balance control mechanisms in play during gait initiation in able bodied subjects and in the case of some frail populations; and(2) the biomechanical parameters used in the literature to quantify dynamic stability during gait initiation. Balance control mechanisms reviewed in this article included anticipatory postural adjustments, stance leg stiffness, foot placement, lateral ankle strategy, swing foot strike pattern and vertical center of mass braking. Based on this review, the following viewpoints were put forward:(1) dynamic stability during gait initiation may share a principle of homeostatic regulation similar to most physiological variables, where separate mechanisms need to be coordinated to ensure stabilization of vital variables, and consequently; and(2) rehabilitation interventions which focus on separate or isolated components of posture, balance, or gait may limit the effectiveness of current clinical practices.展开更多
Anhedonia, the lowered ability to experience pleasure, is one of the non-motor symptoms in Parkinson’s disease. Recently, the distinction between consummatory and anticipatory anhedonia has been proposed and anhedoni...Anhedonia, the lowered ability to experience pleasure, is one of the non-motor symptoms in Parkinson’s disease. Recently, the distinction between consummatory and anticipatory anhedonia has been proposed and anhedonia, notably in PD, could constitute a stable characteristic (anhedonia-trait) or secondary symptom (anhedonia-state). Several studies, using healthy control groups, reported high state consummatory and anticipatory anhedonia in PD using the Snaith Hamilton Pleasure Scale (SHAPS), but when control groups included subjects with different illnesses no significant differences were reported. The aim of the present study was to compare PD subjects with subjects presenting a non-Parkinson motor neurological disease on the anhedonia subscale of the Beck Depression Inventory (BDI-II). This subscale rated consummatory and anticipatory anhedonia state. No significant difference was reported. This result confirmed that PD subjects were not characterized by high levels of state anhedonia when the subjects were compared to subjects with a different disease. Contrary to trait consummatory anhedonia, state anhedonia could be nonspecific to Parkinson’s disease.展开更多
Reflection is considered crucial and widely used in educational setting to help teachers to question their teaching practice and promote their professional development.Be a reflective practitioner is very important bo...Reflection is considered crucial and widely used in educational setting to help teachers to question their teaching practice and promote their professional development.Be a reflective practitioner is very important both for inservice and preservice teachers.Through reflecting on routine teaching practices,teachers can identify the strengths and weaknesses of each session and make improvements upon the inadequacies so that to promote and enhance professional development and practice.In this article,a reflective teacher presents her developing process as a reflective practitioner which is encouraging and inspiring to provide other practitioners in the similar context with a different perspective and reference.展开更多
Node dynamics and network topologies play vital roles in determining the network features and network dynamical behaviors.Thus it is of great theoretical significance and practical value to recover the topology struct...Node dynamics and network topologies play vital roles in determining the network features and network dynamical behaviors.Thus it is of great theoretical significance and practical value to recover the topology structures and system parameters of uncertain complex networks with available information. This paper presents an adaptive anticipatory synchronization-based approach to identify the unknown system parameters and network topological structures of uncertain time-varying delayed complex networks in the presence of noise. Moreover, during the identification process, our proposed scheme guarantees anticipatory synchronization between the uncertain drive and constructed auxiliary response network simultaneously. Particularly, our method can be extended to several special cases. Furthermore, numerical simulations are provided to verify the effectiveness and applicability of our method for reconstructing network topologies and node parameters. We hope our method can provide basic insight into future research on addressing reconstruction issues of uncertain realistic and large-scale complex networks.展开更多
Quadrisyllabic words and phrases with normal stress of Mandarinwere used to study the tonal coarticuation.It was firstly found that the F<sub>0</sub>perturbation at the starting—point and the ending—poin...Quadrisyllabic words and phrases with normal stress of Mandarinwere used to study the tonal coarticuation.It was firstly found that the F<sub>0</sub>perturbation at the starting—point and the ending—point of the F<sub>0</sub> curve ineach syllable caused by tonal coarticulation is larger than the intrinsic F<sub>0</sub> dif-ference of vowels at the starting—point and the ending—point of it.As for thetonal coarticulation,it was discovered that tonal coarticulation in word andphrase with normal stress is different to that in the nonsense sequence with evenstress,and in word and phrase with normal stress,the tonal coarticulatory ef-fects are unidirectional,and the carryover effect does not extend to theending—point of tone—section of the following syllable and the anticipatory ef-fect does not extend to the starting-point of tone-section of the preceding one,and the F<sub>0</sub> perturbation by tonal coarticulation has its pattern.展开更多
基金Supported by UFR STAPS of the University of Paris 11,France
文摘The control of balance is crucial for efficiently performing most of our daily motor tasks, such as those involving goal-directed arm movements or whole body displacement. The purpose of this article is twofold. Firstly, it is to recall how balance can be maintained despite the different sources of postural perturbation arising during voluntary movement. The importance of the so-called "anticipatory postural adjustments"(APA), taken as a "line of defence" against the destabilizing effect induced by a predicted perturbation, is emphasized. Secondly, it is to report the results of recent studies that questioned the adaptability of APA to various constraints imposed on the postural system. The postural constraints envisaged here are classified into biomechanical(postural stability, superimposition of motor tasks),(neuro) physiological(fatigue), temporal(time pressure) and psychological(fear of falling, emotion). Overall, the results of these studies point out the capacity of the central nervous system(CNS) to adapt the spatio-temporal features of APA to each of theseconstraints. However, it seems that, depending on the constraint, the "priority" of the CNS was focused on postural stability maintenance, on body protection and/or on maintenance of focal movement performance.
文摘Background: Medical staff provide care to spouses of terminal cancer patients through trial and error by meeting their various support needs and spousal factors regarding their anticipatory grief. Studies on the association between spousal characteristics and anticipatory grief have been inconclusive;additionally, there has been insufficient research on support needs for anticipatory grief of spouses. This study aimed to explore the spousal characteristics and social support needs predicting anticipatory grief in spouses of patients with cancer at the end of life. Methods: This was a cross-sectional study. Eligible spouses (n = 102) completed a self-report questionnaire in two hospitals with palliative care units in Japan. The questionnaire included demographic information, a tool assessing social support needs of spouses, and the Anticipatory Grief Scale for Family Caregivers. Results: Simple regression analyses indicated that patient age, chemotherapy, no treatment, ECOG PS3, children aged under 20 years, total score of “social support needs regarding the disease and treatment of the patients” and subscale scores (“medical condition and cure,” “daily life and social support,” and “intimacy and employment”), and total score of “social support needs of the spouses” and subscale scores (“family psychological issues and social support” and “intimacy, employment, and society”) were significant variables (all p p Conclusions: Patients having no experience of “chemotherapy” and higher “social support needs of the spouses” in Model 1, and greater spousal needs of “family psychological issues and social support” in Model 2 were significant predictors of severe anticipatory grief. Medical staff should pay attention to these risk factors that predict anticipatory grief among spouses.
文摘Background: Obstacle crossing is the common reason of falling in older adults. Anticipatory postural adjustments phase (APAP) and reaction time phase (RTP) are two important factors in falling prediction. According to previous studies, these parameters increase in older adults at high risk falling. This study explored the effect of aging on APAP and RTP in obstacle negotiation. Method: Nineteen older adults (mean age: 66.73 ± 3.38 years) and twelve young adults (mean age: 26.5 ± 4.37 years), participated in this study. Participants take part in gait initiation task from a starting position on a force platform under two conditions, unobstructed and obstructed (obstacle placed at 1 m from the initial position). RTP and APAP were measured and Timed “Up” & “Go” test (TUG) as a functional test, recorded for all participants. Results: There was no significant difference between healthy young and older adults in RTP and APAP in the unobstructed and obstructed conditions. TUG test was the most sensitive indicator of falling between two groups. Conclusion: Information processing capacity for motor planning and proper strategy selection in pre crossing phase of obstacle negotiation did not have significant difference in healthy old and young groups. Maybe in respect to select healthy older adults without any neurological disorders and cognitive impairments, low attention demand of well learned walking and obstacle negotiation tasks, lead to perform both postural task more automatically and without any significant difference detection.
文摘Individuals frequently generate emotion during the anticipation process and the anticipatory emotion has an important adaptive significance, especially the negative anticipative emotion. Many researches used conscious emotion regulation strategy and successfully reduced negative anticipatory emotion. However, it is costly for our limited cognition. In the present study, we used sentence unscrambling tasks to prime unconscious emotion control goal and investigated its effect on anticipatory anxiety, including experience and physiological activity. The results showed that 1) relative to anticipating neutral images, participations’ anxiety experience and skin conductance level were higher when anticipating negative and unknown images;2) participants who had a unconscious emotion control goal primed achieved the same decrease in skin conductance as those explicitly instructed to reappraise, compared to a control group;3) heart rate was not affected by experiment condition and anticipation type. Together, these findings suggest that unconscious emotion regulation may provide an effective mean of regulating negative anticipatory emotion.
文摘This article addresses the need for anticipatory guidance about death and death education with young children. Children often experience the death of an immediate family member before the age of ten. This number increases if one considers the loss of friends, pets, and other loved ones. However, children experience a death with little or no anticipatory guidance or knowledge about death. Anticipatory guidance can assist the child in having a better understanding of a death when it occurs. Talking about death with children can be difficult for adults. However, it is important to address the topic and realize the impact anticipatory guidance in relation to death can have in assisting with childhood bereavement, anticipatory grief, and anticipatory adaptation. By providing anticipatory education related to death symptoms such as grief, anger, and/or fear, regressive or aggressive behaviors can be prevented or lessened when a death occurs. Age appropriate developmental levels for understanding the concept of death, resources for death education, and literature that can be used for death education are presented. Any resource used for death education with children should be carefully reviewed by the adult for its appropriateness prior to its use.
文摘It is well known that balance control is affected by aging, neurological and orthopedic conditions. Poor balance control during gait and postural maintenance are associated with disability, falls and increased mortality. Gait initiation-the transient period between the quiet standing posture and steady state walking-is a functional task that is classically used in the literature to investigate how the central nervous system(CNS) controls balance during a whole-body movement involving change in the base of support dimensions and center of mass progression. Understanding how the CNS in able-bodied subjects exerts this control during such a challenging task is a prerequisite to identifying motor disorders in populations with specific impairments of the postural system. It may also provide clinicians with objective measures to assess the efficiency of rehabilitation programs and better target interventions according to individual impairments. The present review thus proposes a state-of-the-art analysis on:(1) the balance control mechanisms in play during gait initiation in able bodied subjects and in the case of some frail populations; and(2) the biomechanical parameters used in the literature to quantify dynamic stability during gait initiation. Balance control mechanisms reviewed in this article included anticipatory postural adjustments, stance leg stiffness, foot placement, lateral ankle strategy, swing foot strike pattern and vertical center of mass braking. Based on this review, the following viewpoints were put forward:(1) dynamic stability during gait initiation may share a principle of homeostatic regulation similar to most physiological variables, where separate mechanisms need to be coordinated to ensure stabilization of vital variables, and consequently; and(2) rehabilitation interventions which focus on separate or isolated components of posture, balance, or gait may limit the effectiveness of current clinical practices.
文摘Anhedonia, the lowered ability to experience pleasure, is one of the non-motor symptoms in Parkinson’s disease. Recently, the distinction between consummatory and anticipatory anhedonia has been proposed and anhedonia, notably in PD, could constitute a stable characteristic (anhedonia-trait) or secondary symptom (anhedonia-state). Several studies, using healthy control groups, reported high state consummatory and anticipatory anhedonia in PD using the Snaith Hamilton Pleasure Scale (SHAPS), but when control groups included subjects with different illnesses no significant differences were reported. The aim of the present study was to compare PD subjects with subjects presenting a non-Parkinson motor neurological disease on the anhedonia subscale of the Beck Depression Inventory (BDI-II). This subscale rated consummatory and anticipatory anhedonia state. No significant difference was reported. This result confirmed that PD subjects were not characterized by high levels of state anhedonia when the subjects were compared to subjects with a different disease. Contrary to trait consummatory anhedonia, state anhedonia could be nonspecific to Parkinson’s disease.
文摘Reflection is considered crucial and widely used in educational setting to help teachers to question their teaching practice and promote their professional development.Be a reflective practitioner is very important both for inservice and preservice teachers.Through reflecting on routine teaching practices,teachers can identify the strengths and weaknesses of each session and make improvements upon the inadequacies so that to promote and enhance professional development and practice.In this article,a reflective teacher presents her developing process as a reflective practitioner which is encouraging and inspiring to provide other practitioners in the similar context with a different perspective and reference.
基金supported by the National Key Research and Development Program of China(Grant No.2016YFB0800401)the National Natural Science Foundation of China(Grant Nos.61621003,61532020 and11472290)
文摘Node dynamics and network topologies play vital roles in determining the network features and network dynamical behaviors.Thus it is of great theoretical significance and practical value to recover the topology structures and system parameters of uncertain complex networks with available information. This paper presents an adaptive anticipatory synchronization-based approach to identify the unknown system parameters and network topological structures of uncertain time-varying delayed complex networks in the presence of noise. Moreover, during the identification process, our proposed scheme guarantees anticipatory synchronization between the uncertain drive and constructed auxiliary response network simultaneously. Particularly, our method can be extended to several special cases. Furthermore, numerical simulations are provided to verify the effectiveness and applicability of our method for reconstructing network topologies and node parameters. We hope our method can provide basic insight into future research on addressing reconstruction issues of uncertain realistic and large-scale complex networks.
文摘Quadrisyllabic words and phrases with normal stress of Mandarinwere used to study the tonal coarticuation.It was firstly found that the F<sub>0</sub>perturbation at the starting—point and the ending—point of the F<sub>0</sub> curve ineach syllable caused by tonal coarticulation is larger than the intrinsic F<sub>0</sub> dif-ference of vowels at the starting—point and the ending—point of it.As for thetonal coarticulation,it was discovered that tonal coarticulation in word andphrase with normal stress is different to that in the nonsense sequence with evenstress,and in word and phrase with normal stress,the tonal coarticulatory ef-fects are unidirectional,and the carryover effect does not extend to theending—point of tone—section of the following syllable and the anticipatory ef-fect does not extend to the starting-point of tone-section of the preceding one,and the F<sub>0</sub> perturbation by tonal coarticulation has its pattern.
