The Expression of the Emotions in Man and Animals

For more information or to volunteer, please visit libervox.org.

The Expression of the Emotions in Man and Animals by Charles Darwin.

Chapter 13.

Self-Attention.

Neurons fire less efficiently, attention wavers, reaction times slow, and decision-making degrades.

Your body has sophisticated thermoregulatory systems to keep the brain cool, including the circulation of blood through extensive networks of vessels in the head and face but what happens when those systems need a boost according to the gallops that is where yawning comes in the mechanics of the theory are elegant in their simplicity When you yawn, you draw in a deep breath of cool ambient air through both the nose and the mouth.

This air passes over the nasal passages and the surfaces of the face, cooling the blood that flows through the dense vascular networks in these areas.

That cooled blood then travels upward to the brain through the carotid arteries.

the major vessels that supply the brain with oxygenated blood.

but contagious yawning does not develop until around age four or five.

This developmental gap of several years between the onset of spontaneous yawning, which begins before birth, and the onset of contagious yawning, which begins in early childhood, provides powerful evidence that the two phenomena rely on different brain systems.

Spontaneous yawning requires only the brainstem circuits that are functional in utero, while contagious yawning requires the more sophisticated cortical networks involved in social cognition, empathy, and perspective-taking, networks that take years of postnatal development to come fully online.

...

The Expression of the Emotions in Man and Animals.

And in that book, Darwin makes the claim that, um, that emotional expressions in humans are vestiges of an animal past that have no function but that give evidence of emotional states.

Very influential On the Origin of Species, and Darwin made the decision to not publish the last chapter of that book, which was, which became The Expression of the Emotions in Man and Animals.

He published it as a separate volume.

Um, and-

Visit SpinQuest.com for more details.

Section 15 of the Expression of the Emotions in Man and Animals This is a LibriVox recording.

All LibriVox recordings are in the public domain.

recording by mike trong in houston texas the expression of the emotions in man and animals by charles darwin chapter eight joy high spirits love tender feelings devotion Laughter primarily the expression of joy, ludicrous ideas, movement of the features during laughter, nature of the sound produced, the secretions of tears during loud laughter, gradations from loud laughter to gentle smiling, high spirits, the expression of love, tender feelings, devotion.

joy when intense leads to various purposeless movements to dancing about clapping the hands stamping and to loud laughter laughter seems primarily to be the expression of mere joy or happiness we clearly see this in children at play who are almost incessantly laughing With young persons past childhood, when they are in high spirits, there is always much meaningless laughter.

the laughter of the gods is described by homer as the exuberance of their celestial joy after their daily banquet a man smiles and smiling as we shall see graduates into laughter at meeting an old friend in the street as he does at any trifling pleasure such as smelling a sweet perfume laura brickman from her blindness and deafness could not have acquired any expression through imitation yet when a letter from a beloved friend was communicated to her by gesture language she laughed and clapped her hands and the colour mounted to her cheeks on other occasions she has been seen to stamp for joy idiots and imbecile persons likewise afford good evidence that laughter or smiling primarily expresses mere happiness or joy dr critton brown to whom as on so many other occasions i am indebted for the results of his wide experience informs me that with idiots laughter is the most prevalent and frequent of all the emotional expressions many idiots are morose passionate restless in a painful state of mind or utterly stolid and these never laugh others frequently laugh in a quite senseless manner thus an idiot boy incapable of speech complained to dr brown by the aid of signs that another boy in the asylum had given him a black eye and this was accompanied by explosions of laughter and with his face covered with the broadest smiles there is another class of idiots who are persistently joyous and benign and who are constantly laughing or smiling their countenances often exhibit a stereotyped smile their joyousness is increased and they grin chuckle or giggle whenever food is placed before them or when they are caressed are shown bright colors or hear music some of them laugh more than usual when they walk about or attempt any muscular exertion the joyousness of most of these idiots cannot possibly be associated as dr brown remarks with any distinct ideas they simply feel pleasure and express it by laughter or smiles with imbeciles rather higher in the scale personal vanity seems to be the commonest cause of laughter and next to this pleasure arising from the approbation of their conduct with grown-up persons laughter is excited by causes considerably different from those which sufficed during childhood but this remark hardly applies to smiling laughter in this respect is analogous with weeping which with adults is almost confined to mental distress while with children it is excited by bodily pain or any suffering as well as by fear or rage many curious discussions have been written on the causes of laughter with grown-up persons the subject is extremely complex something incongruous or unaccountable exciting surprise and some sense of superiority in the laughter who must be in a happy frame of mind seems to be the commonest cause the circumstances must not be of a momentous nature no poor man would laugh or smile on suddenly hearing that a large fortune had been bequeathed to him if the mind is strongly excited by pleasurable feelings and any little unexpected event or thought occurs then as mr herbert spencer remarks a large amount of nervous energy instead of being allowed to expand itself in producing an equivalent amount of the new thoughts and emotion which were nascent is suddenly checked in its flow the excess must discharge itself in some other direction and there result an efflux through the motor nerves to various classes of the muscles producing the half convulsive actions we term laughter an observation bearing on this point was made by a correspondent during the recent siege of paris namely that the german soldiers after strong excitement from exposure to extreme danger were particularly apt to burst out into loud laughter at the smallest joke so again when young children are just beginning to cry an unexpected event will sometimes suddenly turn their crying into laughter which apparently serves equally well to expend their superflux nervous energy the imagination is sometimes said to be tickled by a ludicrous idea and this so-called tickling of the mind is curiously analogous with that of the body everyone knows how immoderate children laugh and how their whole bodies are convulsed when they are tickled the anthropoi apes as we have seen likewise utter a reiterated sound corresponding with our laughter when they are tickled especially under the armpits i touched with a bit of paper the sole of the foot of one of my infants when only seven days old and it was suddenly jerked away and the toes curled about as in an older child such movements as well as laughter from being tickled are manifestly reflex actions and this is likewise shown by the minute unstriped muscles which serve to erect the separate hairs on the body contracting near a tickled surface yet laughter from ludicrous idea though involuntary cannot be called a strictly reflex action in this case and in that of laughter from being tickled the mind must be in a pleasurable condition a young child if tickled by a strange man would scream from fear the touch must be light and an idea or event to be ludicrous must not be of grave import the parts of the body which are most easily tickled are those which are not commonly touched such as the armpits or between the toes or parts such as the soles of the feet which are habitually touched by a broad surface but the surface on which we sit offers a marked exception to this rule according to gratiolet certain nerves are much more sensitive to tickling than others from the fact that a child can hardly tickle itself or in a much less degree than when tickled by another person it seems that the precise point to be touched must not be known so with the mind something unexpected a novel or incongruous idea which breaks through an habitual train of thought appears to be a strong element in the ludicrous the sound of laughter is produced by a deep inspiration followed by short interrupted spermatic contractions of the chest and especially the diaphragm hence we hear of laughter holding both his sides from the shaking of the body the head nods to and fro the lower jaw often quivers up and down as is likewise the case with some species of baboons when they are much pleased the tendency in the zygomatic muscles to contract under pleasurable emotions is shown by a curious fact communicated to me by dr brown with respect to patients suffering from general paralysis of the insane in this malady there is almost invariably optimism delusions as to wealth rank grandeur insane joyousness benevolence and profusion while its very earliest physical symptom is trembling at the corners of the mouth and at the outer corners of the eyes this is a well-recognized fact constant tremulous agitation of the inferior palpebral and great zygomatic muscles is pathognomic of the earlier stages of general paralysis the countenance has a pleased and benevolent expression as the disease advances other muscles become involved but until complete fatuity is reached the prevailing expression is that of feeble benevolence as in laughing and broadly smiling the cheeks and upper lip are much raised the nose appears to be shortened and the skin on the bridge becomes finely wrinkled in transverse lines with other oblique longitudinal lines on the sides the upper front teeth are commonly exposed a well-marked nasolabial fold is formed which runs from the wing of each nostril to the corner of the mouth and this fold is often double in old persons a bright and sparkling eye is as characteristic of a pleased or amused state of mind as is the retraction of the corners of the mouth and upper lip with the wrinkles thus produced even the eyes of microcephalous idiots who are so degraded that they never learn to speak brighten slightly when they are pleased under extreme laughter the eyes are too much suffused with tears to sparkle but the moisture squeezed out of the glands during moderate laughter or smiling may aid in giving them lustre though this must be of altogether subordinate importance as they become dull from grief though they are then often moist their brightness seems to be chiefly due to their tenseness owing to the contraction of the orbicular muscles and to the pressure of the raised cheeks but according to dr pederick who has discussed his point more fully than any other writer the tenseness may be largely attributed to the eyeballs becoming filled with blood and other fluids from the acceleration of the circulation consequent on the excitement of

Your best bet every day you want to play bovada.lv. Ready for everything.

Section fourteen of The Expression of the Emotions in Man and Animals.

This is a LibriVox recording.

All LibriVox recordings are in the public domain.

For more information or to volunteer, please visit LibriVox.org. Reading by Matt Gerard.

The Expression of the Emotions in Man and Animals by Charles Darwin.

Chapter seven.

Low spirits, anxiety, grief, dejection, despair.

See verbo.com slash trust for details.

Section 13 of the expression of the emotions in man and animals.

This is a LibriVox recording.

All LibriVox recordings are in the public domain.

For more information or to volunteer, please visit LibriVox.org. Reading by Matt Berard.

The Expression of the Emotions in Man and Animals by Charles Darwin.

Chapter 7.

Low Spirits, Anxiety, Grief, Dejection, Despair.

Kewpie, the original Japanese mayonnaise.

Section 11 of The Expression of the Emotions in Man and Animals.

For more information, or to volunteer, please visit LibriVox.org. Recording by Jairus Amar THE EXPRESSION OF THE EMOTIONS IN MAN AND ANIMALS by charles darwin chapter six special expressions of man suffering and weeping part one the screaming and weeping of infants forms of features age at which weeping commences The effects of habitual restraint on weeping.

Sobbing.

Cause of the contraction of the muscles round the eyes during screaming.

Please enjoy responsibly.

Section 8 of the Expression of Emotions in Man and Animals.

This is a LibriVox recording.

All LibriVox recordings are in the public domain.

For more information or to volunteer, please visit LibriVox.org. Read by Michelle Fry, Baton Rouge, Louisiana.

The Expression of Emotions in Man and Animals by Charles Darwin.

Chapter 4.

Means of Expression in Animals.