purring, cats and some characteristics of wild cats, have long been the center of a great clash of theories and speculation, not always convincing. The way in which they are produced has remained virtually unknown until recent times, to say nothing of their function still not completely understood.
But everything is easier to indicate the extreme ignorance of human beings to respect, rather than the real uniqueness attributed to the disseminated by various scholars, who in turn wanted to see the many different meanings and bizarre such as the real "mantra" a positive impact on the entire body of the cat or even a likely manifestation of euphoria typical experience when you run a high risk.
But everything is easier to indicate the extreme ignorance of human beings to respect, rather than the real uniqueness attributed to the disseminated by various scholars, who in turn wanted to see the many different meanings and bizarre such as the real "mantra" a positive impact on the entire body of the cat or even a likely manifestation of euphoria typical experience when you run a high risk. 
But even if they are not really that great, their evolution and their communicative function remain comprehensible or rather guessed, are reflected in the that science already knows about similar vibrations typical of deaf communication from other mammals. 
Basically the many uses of the cat is purring like the murmur of a closed port, are ritualized sound characteristic of non-voice communication of the parent body. Symbolically because it is a sound while the cat is taking care of the little ones, from both the mother by the cats. 
latter begin to purr, just a few days after birth, and are systematically during suckling, as well as the cats while breastfeeding. This is without shadow of a doubt proof that the cast represent a fundamental characteristic of the physical contact between mother and children.
purring sounds in fact are not noticeable from a distance as all those that are transmitted through the air, but must be perceived to require a certain proximity, if not direct physical contact.
And it is easy to hear a cat purr as he fondles her, this fact, together with the meow of greeting and to those questions, it is also the verse that most cats often turn to their owners / partners.
There has been a considerable amount speculative considerations about the way they are produced purring, not least the fact that it is continuously during inhalation and exhalation, except for a short break between phases of the cycle of respiration.
In any case, technically speaking this is all the real effects of a vocalization, because it involves the vocal apparatus: the sound you know so well is in fact produced by the rapid increase and decrease of pressure in the closing and subsequent opening of the glottis, and the rapid separation of the vocal folds following the increase of pressure.
A detailed physiological study of molten conducted by researchers at Dartmouth University School of Medicine, found that the fused nerve impulses are generated by very frequent, rhythmic, sent directly from the central nervous system to the muscles of the diaphragm and vocal cords: Members of the two centers on their issue.
In this way the muscles of these two districts are stimulated alternately with gusts ranging from 20 to about 30 pulses per second. The glottis is made in particular moved by the muscles of the larynx, which contract for 10-15 ms every 30-40 milliseconds. These, in turn, are guided by a sort of pedometer nervous at high frequency, very accurate, and that seems to be independent innervation than the rest (very similar to what happens in the heart).
fact is calibrated with a tremor of 'extreme precision, and physiologists who have carried out such tests have shown that no other kind of thrill usual, found in other animals, is approaching the levels of frequency and regularity of purr.
course is that it is extremely difficult to briefly list all the occasions on which you can hear a cat issue this characteristic noise, but all appear to be associated with an actual contact with humans or conspecifics or situations which contact between cats would desirable, as when a person is about to fall asleep.
The various ritualization, the cat used to cast for example, during courtship or during greetings of friendship towards socially known elements (hetero-or conspecifics), or to be accepted by a dominant individual, as well as a result of tactile stimulation determined by the roll or by rubbing, from drowsiness and from being in familiar surroundings warm and comfortable.
Domestic cats are especially prone to finally purr when they are in touch with the people, as in relating to them immediately put in place around the repertoire of instinctive social behavior from mother to child.
But probably the strangest time in which cats purr is a situation well known to veterinarians, or in combination with the presence of intense pain stimuli, in which case it is assumed (although lacking direct evidence) that this is an attempt by the cat to reduce his feeling of stress, like when you try to reduce the perception of pain by concentrating on pleasant mental images.
On the contrary there are a number of stimuli that lead to the termination of the strong cast, including aggressive interactions o sessuali, il contatto con un altro gatto che non si era incontrato da molto tempo (e che dunque non è riconosciuto come noto), o ancora l'annusamento della cosiddetta "erba gatta", il cacciare una preda o anche il solo fatto di essere in presenza di essa.
And it is easy to hear a cat purr as he fondles her, this fact, together with the meow of greeting and to those questions, it is also the verse that most cats often turn to their owners / partners. 
There has been a considerable amount speculative considerations about the way they are produced purring, not least the fact that it is continuously during inhalation and exhalation, except for a short break between phases of the cycle of respiration. 
A detailed physiological study of molten conducted by researchers at Dartmouth University School of Medicine, found that the fused nerve impulses are generated by very frequent, rhythmic, sent directly from the central nervous system to the muscles of the diaphragm and vocal cords: Members of the two centers on their issue. 
In this way the muscles of these two districts are stimulated alternately with gusts ranging from 20 to about 30 pulses per second. The glottis is made in particular moved by the muscles of the larynx, which contract for 10-15 ms every 30-40 milliseconds. These, in turn, are guided by a sort of pedometer nervous at high frequency, very accurate, and that seems to be independent innervation than the rest (very similar to what happens in the heart). 
fact is calibrated with a tremor of 'extreme precision, and physiologists who have carried out such tests have shown that no other kind of thrill usual, found in other animals, is approaching the levels of frequency and regularity of purr. 
course is that it is extremely difficult to briefly list all the occasions on which you can hear a cat issue this characteristic noise, but all appear to be associated with an actual contact with humans or conspecifics or situations which contact between cats would desirable, as when a person is about to fall asleep. 
The various ritualization, the cat used to cast for example, during courtship or during greetings of friendship towards socially known elements (hetero-or conspecifics), or to be accepted by a dominant individual, as well as a result of tactile stimulation determined by the roll or by rubbing, from drowsiness and from being in familiar surroundings warm and comfortable. 
Domestic cats are especially prone to finally purr when they are in touch with the people, as in relating to them immediately put in place around the repertoire of instinctive social behavior from mother to child. 
On the contrary there are a number of stimuli that lead to the termination of the strong cast, including aggressive interactions o sessuali, il contatto con un altro gatto che non si era incontrato da molto tempo (e che dunque non è riconosciuto come noto), o ancora l'annusamento della cosiddetta "erba gatta", il cacciare una preda o anche il solo fatto di essere in presenza di essa. 
Per concludere bisogna sottolineare che sebbene in genere la gamma di strategie sociali messe in atto dal gatto (specie se selvatico) in natura, compreso quindi il suo repertorio vocale, sia improntato più al confronto e alla competizione che non all'instaurazione di rapporti sociali ed affettivi, nell'ambito domestico esso invece è libero di esibire tutto il suo ridotto, ma efficace ed accattivante repertorio conduct cooperative and friendly.
behaviors that are so compelling and effective thanks to the fact that, originating from the gut and visceral relationships between mothers and kittens, they go to touch the strings for us very receptive and sensitive.
behaviors that are so compelling and effective thanks to the fact that, originating from the gut and visceral relationships between mothers and kittens, they go to touch the strings for us very receptive and sensitive. 
0 comments:
Post a Comment