What is a Babinski Reflex?
438965
A babinski reflex is common in children, it is when you stroke the bottom of the foot, the big toe will stretch towards the body and the other toes will fan out.\n\nEdit*  did some follow up:\n\nIn people more than 2 years old, the presence of a Babinski's reflex indicates damage to the nerve paths connecting the spinal cord and the brain (the corticospinal tract). Because this tract is right-sided and left-sided, a Babinski's reflex can occur on one side or on both sides.
800166
sometimes your reflexes don't respond because you were conscious of the test and your body was tensed subconscious, if everything else was ok then this means nothing, good luck
350880
It is a reflex action which is almost impossible to overcome.
350799
babička (pronounced babitchka)
734297
because it is bending flexion would be your answer\n\n(a trick ab/aduction is think about when someone is taking away they abducted)
754955
Interesting question. Possibly related to our ancestors time in the trees. A strong grip would be essential for survival and this involuntary reflex is a relic from that time.
81957
I believe it has something to do with your cerebellum being able to detect expected and unexpected sensations. A reasonable explanation can be found here: http://science.howstuffworks.com/question511.htm
473373
nerves sometimes 'short-circit' and give you a reaction it soould not. like turning on a light in the living room and the tv fuzzing. how about a eye twitch,same concept.
375099
Spinal\n\n\n\nErection is basically a spinal reflex that can be initiated by recruitment of penile afferents, but also by visual, olfactory, and imaginary stimuli. The reflex involves both autonomic and somatic efferents and is modulated by supraspinal influences. Several central transmitters involved in the erectile control have been identified. Dopamine, acetylcholine, nitric oxide (NO), and peptides, such as oxytocin and adrenocorticotropic/alpha-melanocyte-stimulating hormone, seem to have a facilitatory role, whereas serotonin may be either facilitatory or inhibitory, and enkephalins are inhibitory.
1168004
A rhythm of the body.
302977
Do you mean like moving your arm or something?  Becuase sometimes it's before the conscious brain knows about it (like when you are burnt) and sometimes it's when you consciously choose to move it.
1043059
We have to focus on doing is so our body reacts  before anything happens. Its reaction prevents the brain from processing tickling like it would if another person were doing it. It is no loger a surprise.
685672
It's designed to prepare a soldier physically and mentally for the rigors of combat. Being able to react instantly in a stressful and terrifying situation. Having one's training become an instant response can make the difference between the "quick and the dead".  Fact is, if you're being shot at, stopping to consider what to do allows time for the brain to butt in with the "OH Sh*t!" factor.  A good way to get dead. \n  Tis this very reason why many combat vets get into trouble. "Switching off" means unlearning reflexes learned in moments of unimaginable stress and fear. Said reflex being involuntary, may be needed in combat, but serious overkill (pardon the pun) in an ordinary barfight.
1012994
The term sometimes used is paresthesia.  Paresthesia is a sensation of tingling, pricking, or numbness of the skin with no apparent physical cause.  This lack of sensation is caused by a temporary impedance of blood flow to the extremity which results in nerve cells being starved of oxygen and glucose. Additionally, the impedance of blood flow is usually due to pressure on the limb which in turn compresses the nerve cells, making transmission of neural impulses more difficult. Transient paresthesia is the familiar sensation of "pins and needles" felt when oxygen and glucose-rich blood return to the nerve cells which in turn fire at an accelerated rate until they establish their regular transmission rate.
454772
This could be caused from tension, and when your muscles relax, where the spinal column meets the back of the head it will crack and pop.  kinda like cracking the nuckles?
175071
I have heard the term, but had to 'look it up' to find the answer:\n\n"reflexive muscle contraction elicited by electrically stimulating the skin over a peripheral nerve.  Used to assess the degree of excitation of alpha motoneurons." \nNote: this text spells it "motoneurons" not motorneurons.
431715
Maybe it's part of the jerking sensation.