A new psychobiological model of volitive processes and its implications for the etiopathology of mental disorders is proposed. The model is based on five elementary volitive processes. These are the volition to act;th...A new psychobiological model of volitive processes and its implications for the etiopathology of mental disorders is proposed. The model is based on five elementary volitive processes. These are the volition to act;the volition to self-instrumentalize;the volition to program intentions, the volition to generate realities;and the volition to permanent existence. Imbalances in information processing in tripartite synapses and their network may be responsible for dysfunctions of self-instrumentalization. It is suggested that the volition to permanent existence unconsciously works in mental disorders, but the volition to intentional programming of realities and the volition to generate realities by communication with subjects and objects in their environment are impaired. In depression, the volition to act is constrained by hyperintentional programs that are non-feasible in the environment. In mania volitive processes are totally oriented on events in the environment without any goal-directed pro-gramming. Dysfunctions of volitive processes in schizophrenia are fun-damentally caused by severe impairments of self-instrumentalization. As shown in tripartite synapses a gap between sensory information pro-cessing in the neuronal network and the inner glial networks causes the inability of schizophrenics to distinguish between the self and the other. In delusions, the destiny for communication becomes staged as pseu-do-communication. Together, the study outlines a new model of volitive processes and deduces dysfunctions responsible for communication pa-thology and abnormal reality experiences of patients with mental disor-ders.展开更多
Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury level.However,because of prolonged inactivity,initial attempts to activate these...Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury level.However,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface electromyography.In this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord injury.Eleven patients with chronic complete thoracic spinal cord injury were recruited.Surface electromyography data from eight major leg muscles were acquired and compared before and after the passive activity protocol.The results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of activation.Although the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically significant.These findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.展开更多
文摘A new psychobiological model of volitive processes and its implications for the etiopathology of mental disorders is proposed. The model is based on five elementary volitive processes. These are the volition to act;the volition to self-instrumentalize;the volition to program intentions, the volition to generate realities;and the volition to permanent existence. Imbalances in information processing in tripartite synapses and their network may be responsible for dysfunctions of self-instrumentalization. It is suggested that the volition to permanent existence unconsciously works in mental disorders, but the volition to intentional programming of realities and the volition to generate realities by communication with subjects and objects in their environment are impaired. In depression, the volition to act is constrained by hyperintentional programs that are non-feasible in the environment. In mania volitive processes are totally oriented on events in the environment without any goal-directed pro-gramming. Dysfunctions of volitive processes in schizophrenia are fun-damentally caused by severe impairments of self-instrumentalization. As shown in tripartite synapses a gap between sensory information pro-cessing in the neuronal network and the inner glial networks causes the inability of schizophrenics to distinguish between the self and the other. In delusions, the destiny for communication becomes staged as pseu-do-communication. Together, the study outlines a new model of volitive processes and deduces dysfunctions responsible for communication pa-thology and abnormal reality experiences of patients with mental disor-ders.
基金supported by the Fundamental Research Funds for Central Public Welfare Research Institute,No.2020CZ-5(to WS and GS)the National Natural Science Foundation of China,No.31970970(to JSR)Fundamental Research Funds for the Central Universities,No.YWF-23-YG-QB-010(to JSR)。
文摘Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury level.However,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface electromyography.In this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord injury.Eleven patients with chronic complete thoracic spinal cord injury were recruited.Surface electromyography data from eight major leg muscles were acquired and compared before and after the passive activity protocol.The results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of activation.Although the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically significant.These findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.
