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3
votes
1answer
76 views

Can signals from the prefrontal cortex alone trigger a readiness potential in the pre-supplementary motor area?

Background In Haggard, Patrick. "Human volition: towards a neuroscience of will." Nature Reviews Neuroscience 9.12 (2008): 934., the author states in the caption of Figure 1 (pg. 4): The ...
3
votes
0answers
76 views

Reference request: Parkinson's disease book [closed]

I am about start a project on computational modelling of basal ganglia in the context of motor problems in Parkinson's disease. My background is mostly on computational side (and some neuroscience too)...
1
vote
1answer
57 views

How does modulation of the activity of an afferent neuron lead to increase in MEP's?

I was confused reading this: Another example has been described with the primary motor cortex, where the afferent axonal synaptic input (Figure 1) can be facilitated by anodal tDCS (Rahman et ...
3
votes
0answers
17 views

Are facial muscles activated in verbal thought? [duplicate]

In this video, Dr Russel Barkley states the following: I can put electrodes all over your face and I can ask you to cite your Canadian pledge of allegiance in your mind. You still move your face. ...
1
vote
0answers
203 views

Do central pattern generators control musical performance?

Are the sometimes very fast and complicated rhythmic movements and often long lasting patterns a musician performs while playing a piece of music generated by central pattern generators (in the sense ...
4
votes
1answer
111 views

Latency between actual neurons firing and muscles response in open and close fist experiment

I'm trying to analyze the electrocorticograms (ECoG) of opening and closing the fist. I have the data of a glove to capture when the hand moves. I'm struggling with finding the best epoch or segment ...
3
votes
0answers
70 views

Does increased motor development always occur at the expense of speech development, or vice versa?

It is often said that infants / toddlers* develop in a focused manner. I am specifically interested in the notion that a quick development of speech occurs at the expense of motor skill development ...
7
votes
1answer
186 views

How exactly do “you” think and interact with your body?

It has been established that our brains control many processes that your body carries out autonomously and involuntarily. However, other actions are controlled by you. (e.g. you lift an arm, you walk)....
9
votes
2answers
163 views

Trying to understand equations in Karl Friston article

I am trying to understand a neuroscience article by Karl Friston. In it he gives three equations that are, as I understand him, equivalent or inter-convertible and refer to both physical and Shannon ...
5
votes
1answer
90 views

How is averaging used in calculating the Bereitschaftspotential?

I have a question about the averaging involved in the Bereitschaftspotential. On the wiki page you can read that, because it is so small, the Bereitschaftspotential only becomes apparent after ...
3
votes
0answers
420 views

How does the body experience free-fall during a hypnic jerk

Today I learned that a sudden jerk that you sometimes experience when you are just about to fall asleep due to a sense of free-fall or weightlessness is called a hypnic jerk. If, while sleeping, I ...
3
votes
1answer
498 views

What causes a muscle to be unsteady?

I have noticed for myself that sometimes, certain muscles may become unsteady. Here are three examples: Sometimes it is more difficult to hold my hand still in the air. Another example is how my ...
7
votes
1answer
207 views

What regulates the strength of motor signals?

I've seen cognitive and robot models where the input signals from the sensors are directly used as the signal for outgoing motor control. This doesn't make much sense, because obviously we're able ...
8
votes
3answers
327 views

Abstract idealized mental visualization improves motor task performance

I practice martial arts (Aikido), which involves a lot of rotation. When practicing, I find that holding an abstract image in my head, instead of thinking about the actual technique, improves my ...
13
votes
1answer
5k views

What structures in the brain are called upon to strengthen coupling between bilateral movements?

It is very difficult for the normally-coordinated person to be able to pat his/her head and rub his/her stomach at the same time (or pick a similar activity). It seems to be possible to maintain the ...