Making a plan of action
نویسندگان
چکیده
Were the brain to rely completely on sensory feedback to direct movement during activities like reaching, primate arms would move infuriatingly slowly. Grant Mulliken et al. investigated how a region of the brain develops a representation of arm movement that overcomes the long sensory feedback delays. The posterior parietal cortex (PPC) area of the brain serves as a functional bridge between the areas that sense input, like visual cues, and those that direct motor function. Because sensory input alone is generally too slow for the PPC to develop an estimate of the state of the hand during movement, the authors investigated whether downstream motor movement information is harnessed by the PPC to anticipate the next state of a movement. They measured the activity of neurons in the PPC while monkeys operated a joystick to move a cursor toward a target. The neural activity showed that the PPC develops a forward-state representation of action, with neurons encoding an estimate of the current direction of the cursor, as well as its future direction. Because the PPC develops a continuously updated forward representation of action for goaldirected movement, it would be an attractive region for the development of neural prosthetics, the authors say. — T.H.D.
منابع مشابه
Cultural implications of business strategy-making
The central issue in strategy formulation and implementation process, or strategy-making, is the identification of environmental forces and the preparation of a plan of action to deal with them. This necessitates scanning the environment for gathering information. Environmental scanning should enable the firm to identify these forces. Doing this not only calls for information gathering, but als...
متن کاملObstacles and Challenges of Policy-making based on Gender Equity
Gender equity is a controversial social issue and now with its incorporation into the Sixth Development Plan, policy-making for gender equity is essential. To this end, allocation of more resources and opportunities and implementation of affirmative action policies to achieve gender equity are not sufficient. Women's empowerment in various fields, and not just the economy and employment, is ess...
متن کاملDeveloping Plan of action and strategic map for "Nursing Sciences development": an experience
Developing Plan of action and strategic map for "Nursing Sciences development": an experience
متن کاملتاثیر برنامه ی عملی نوشتاری((Written Action Plan مبتنی بر علایم بر روی میزان مراجعه به اورژانس و غیبت از مدرسه کودکان 7 تا 18 سال شهر اهواز
Abstract Background: Asthma is one of the most common childhood diseases and the first cause of school absentness and third cause of hospitalization in the children under 15 years. The goal of this study was to assess the effect of symptoms-based “written action plan” on frequency of emergency department visits and school absentness in children with the age of 7-18 years. Materials and methods:...
متن کاملBeing a departmental head – what does it mean? Emphasizing the salience and shades in medical academia
Dear Editor, When an academician or clinician assumes the chair of department, multiple responsibilities dawn upon the chair that requires appropriate analysis and effective decision-making skills. Head of the department is uniquely poised to translate the organisational goals into the collective performance of the departmental members. Headship is an iterative process which necessitates ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008