Neurons generate electrical signals that travel along their axon s. When a pulse of electricity reaches a junction called a synapse, it causes a neurotransmitter chemical to be released, which binds to receptors on other cells and thereby alters their electrical activity.

When an action potential, traveling along an axon, arrives at a synapse, it causes a chemical called a neurotransmitter to be released.

When pressure is applied and the corpuscle is deformed, mechanical stimulus is transferred to the axon, which fires.

When a signal comes down an axon, the synaptic vesicles fuse with the cell membrane releasing the neurotransmitter so that it can be detected by receptor molecules on the next nerve cell.

: Let us assume that the persistence or repetition of a reverberatory activity ( or " trace ") tends to induce lasting cellular changes that add to its stability .… When an axon of cell A is near enough to excite a cell B and repeatedly or persistently takes part in firing it, some growth process or metabolic change takes place in one or both cells such that As efficiency, as one of the cells firing B, is increased.

:" When one cell repeatedly assists in firing another, the axon of the first cell develops synaptic knobs ( or enlarges them if they already exist ) in contact with the soma of the second cell.

When an action potential reaches the axon terminal of a motor neuron, vesicles carrying neurotransmitters ( mostly acetylcholine ) are exocytosed and the contents are released into the neuromuscular junction.

When a muscle contracts, an action potential is propagated down a nerve until it reaches the axon terminal of the motor neuron.

When an action potential propagates down a nerve and reaches the axon terminal of the motor neuron, the change in membrane voltage causes the calcium voltage gated ion channels to open allowing for an influx of calcium ions.

When an action potential propagates down the motor neuron axon and arrives at the axon terminal, it opens calcium channels and causes a depolarization of the axon terminal.

When an axon is severed, the segment of the axon distal to the cut degenerates and is absorbed by Schwann cells.

When Heidegger and Sartre speak of a contrast between being and existence, they may be right, I don't know, but their language is too philosophical for me.

When they express themselves it is incandescent hatred that shines forth, the rage of repudiation, the ecstasy of negation.

When I try to work out my reasons for feeling that this passage is of critical significance, I come up with the following ideas, which I shall express very briefly here and revert to in a later essay.

When the proprietor dies, the establishment should become a corporation until it is either acquired by another proprietor or the government decides to drop it.

When the reactionary response is thus bolstered by an intellectual defense, the characteristics of that defense are explicable only in terms of the basic attitudes of unanalyzed reaction.

When I take over Taliesin, the first thing I'll do is fire you ''.

When someone in the audience rose and asked how does it feel to be a celebrity, Carl said, `` A celebrity is a fellow who eats celery with celerity ''.

When decision makers act within this frame they determine whether a claim put forward in the name of religion is to be accepted by the larger community as appropriate to religion.

When we consider the disorganized state of the world community, and the legacy of predispositions adversely directed against all who are identified as Jews, it is obvious that the struggle for the minds and muscles of men needs to be prosecuted with increasing vigor and skill.

When we turn to Aristotle's ideas on the moral measure of literature, it is at once apparent that he is at times equally concerned about the influence of the art.

When their faith in civil liberties is tested against strong pressures of social expediency in specific issues, e.g., suppression of `` dangerous ideas '', many waver and give in.

There is, of course, nothing new about dystopias, for they belong to a literary tradition which, including also the closely related satiric utopias, stretches from at least as far back as the eighteenth century and Swift's Gulliver's Travels to the twentieth century and Zamiatin's We, Capek's War With The Newts, Huxley's Brave New World, E. M. Forster's `` The Machine Stops '', C. S. Lewis's That Hideous Strength, and Orwell's Nineteen Eighty-Four, and which in science fiction is represented before the present deluge as early as Wells's trilogy, The Time Machine, `` A Story Of The Days To Come '', and When The Sleeper Wakes, and as recently as Jack Williamson's `` With Folded Hands '' ( 1947 ), the classic story of men replaced by their own robots.

When I first came across Samuel Johnson's pronouncement, `` the remedy for the ills of life is palliative rather than radical '', it seemed to me to sum up the profoundest of political and social truths.

When all else fails, it is argued that open sessions slow down governmental operations.

When a person has thoughtlessly or deliberately caused us pain or hardship it is not always easy to say, `` Just forget it ''.

When a person meets God's requirements for the experience of forgiveness he is forgiven.

When I hold my son he stiffens his whole body in my arms until he is as straight and stiff as a board.

When different colors are used, she is just as likely to color trees purple, hair green, etc..

When we become firm enough to stand for those ideals which we know to be right, when we become hard enough to refuse to aid nations which do not permit self-determination, when we become strong enough to resist any more drifts towards socialism in our own Nation, when we recognize that our enemy is Communism not war, and when we realize that concessions to Communists do not insure peace or freedom, then, and only then will we no longer be `` soft ''.

When one powerful nation strives to emulate the success of another, it is only natural.

When a man is laid to rest, he is entitled to stay put.

When I talked to Ching about it, he said, Everyone can learn, if he is not a Reactionary or lazy.

When the myelin sheath is damaged, nerve signals are slower, and this can be measured by a common neurological test, electromyography.

When the British army conquered Eritrea from the Italians in spring 1941, most of the infrastructures and the industrial areas were extremely damaged.

When the surface glycosaminoglycan ( GAG ) layer is damaged ( via a urinary tract infection ( UTI ), excessive consumption of coffee or sodas, traumatic injury, etc.

When knotted rope is strained to its breaking point, it almost always fails at the knot or close to it, unless it is defective or damaged elsewhere.

When the People's Republic was founded in 1949, the telecommunications systems and facilities in China first established by the Qing and Republican ITA and Ministry of Posts and Communications had been seriously damaged from over thirty years of on and off war between warlords, Japan, and the two sides of the Chinese Civil War.

When they enter the barrier, the ship is damaged and they detect a settlement with 8, 000 people who are mostly human.

When Denmark abolished slavery in 1848, many plantation owners wanted full reimbursement, on the grounds that their assets were damaged by the loss of the slaves, and by the fact that they would have to pay for labor in the future.

When cut or grated, however, enzymes from the damaged plant cells break down sinigrin ( a glucosinolate ) to produce allyl isothiocyanate ( mustard oil ), which irritates the sinuses and eyes.

When ultraviolet rays penetrate the skin and damage DNA, thymidine dinucleotide ( pTpT ) fragments from damaged DNA will trigger melanogenesis and cause the melanocyte to produce melanosomes, which are then transferred by dendrite to the top layer of keratinocytes.

When a card is unrecognized it is frequently because the CIS information is either lost or damaged.

When R2 is damaged in the Battle of Yavin, C-3PO offers to donate any mechanical parts helpful in his repair ; but this transference is never confirmed.

When he gets to the farmhouse, he finds it damaged and empty.

When fire damaged the courthouse on October 19, 1875, the county records were saved because they were in the adjacent building.

When the cathedral begun in 1137 was ready for consecration the relics of St Magnus were transferred, and in 1917 a hidden cavity was found in a column, containing a box with bones including a damaged skull.

When coupled with melatonin, 75 % of damaged sciatic nerves were rendered viable.

When laboratory testing, field experience, or engineering judgement indicates that an item could be damaged by mechanical shock, several courses of action might be considered:

When the men of Númenor were buried under falling hills, Tirion, along with all the Undying Lands, was taken out of mortal reach forever and was heavily damaged if not completely destroyed.

When a monocyte enters damaged tissue through the endothelium of a blood vessel, a process known as the leukocyte extravasation, it undergoes a series of changes to become a macrophage.

When the berserk state ends, his own health is damaged and he is exhausted, requiring rest for his full strength to return.

* When operated at full speed, the Pacificat fleet created a wake which was reported to have damaged waterfront wharves and property in coastal areas near the two terminals.

When endothelium is damaged, the normally isolated, underlying collagen is exposed to circulating platelets, which bind directly to collagen with collagen-specific glycoprotein Ia / IIa surface receptors.

When asbestos-containing material is damaged or disintegrates, microscopic fibres are dispersed into the air.

When a fire damaged cathedral and basilica in 1075, they were later rebuilt as the Duomo.

When the stela was discovered, its lines of text were already damaged and incomplete, and only referred to Khaf, not Khafra.