Motoneuron excitability: The importance of neuromodulatory inputs

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Decorrelation of cortical inputs and motoneuron output.

Oscillations in the primary motor cortex are transmitted through the corticospinal tract to the motoneuron pool. This pathway is believed to produce an effective and direct command from the motor cortex to the spinal motoneurons for the modulation of the force output. In this study, we used a computational model of a population of motoneurons to investigate the factors that can influence the tr...

متن کامل

the investigation of criterion validity of the modified ashworth scale using the alpha motoneuron excitability indicators

the purpose of this study was to investigate the validity of the modified ashworth scale (mas) by using both the conventional (hmax/mmax ratio) and the new indicators (hslp/mslp) of motoneuron excitability. this research was a correlational study on twenty post-stroke patients. main outcome measures were the mas and electrophysiologic assessments. the latter was performed using both conventiona...

متن کامل

Regulation of motoneuron excitability and the setting of homeostatic limits

Stability of neural circuits is reliant on homeostatic mechanisms that return neuron activity towards pre-determined and physiologically appropriate levels. Without these mechanisms, changes due to synaptic plasticity, ageing and disease may push neural circuits towards instability. Whilst widely documented, understanding of how and when neurons determine an appropriate activity level, the so-c...

متن کامل

The effect of acupuncture on alpha-motoneuron excitability.

The effect of short duration and sustained manual acupuncture on alpha-motoneuron excitability was studied using the Soleus H-reflex. The acupuncture points GB-34 and SP-9 were needled and stimulated manually. Normalised H-reflex and M-wave recruitment curves were constructed and the ratio of the slope of the ascending part of the H-reflex recruitment curve (Hslp) to the slope of the ascending ...

متن کامل

Reduced motoneuron excitability in a rat model of sepsis.

Many critically ill patients in intensive care units suffer from an infection-induced whole body inflammatory state known as sepsis, which causes severe weakness in patients who survive. The mechanisms by which sepsis triggers intensive care unit-acquired weakness (ICUAW) remain unclear. Currently, research into ICUAW is focused on dysfunction of the peripheral nervous system. During electromyo...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Clinical Neurophysiology

سال: 2009

ISSN: 1388-2457

DOI: 10.1016/j.clinph.2009.08.009