Tuesday, August 16, 2011

Scientists Claim Human Brain May Have Reached Full Capacity

Scientists Claim Human Brain May Have Reached Full Capacity
Scientists claim the human brain is at capacity and is too tiring to get smarter

We've invented penicillin, space shuttles, computers and even artificial hearts, among many other wonders. So where will human intelligence go from here?

The answer, if certain scientists are correct, is nowhere.

Mankind’s brain power has reached its peak and it is physically impossible for us to become any smarter, they say.

They claim that in order to become any more intelligent the human brain would need vast amounts of extra energy and oxygen – and we simply cannot provide it.

Cambridge University researchers have analysed the structure of the brain and worked out how much energy its cells use up.

Simon Laughlin, professor of neurobiology, said: ‘We have demonstrated that brains must consume energy to function and that these requirements are sufficiently demanding to limit our performance and determine design.

'Far-reaching powers of deduction demand a lot of energy because for the brain to search out new relationships it must constantly correlate information from different sources.

‘Such energy demands mean there is a limit to the information we can process.’

Other scientists claim that the brain’s ‘wiring’ or network of fibres linking different areas to one another cannot get any better.

They have found that the cleverest people have the best wiring, with messages carried very quickly between different parts of the brain.

But scientists claim that the wiring would need vast amounts of extra energy to become more efficient. As before, they say it is impossible for humans to provide this, therefore we cannot get cleverer.

Ed Bullmore, professor of psychiatry at Cambridge, where he specialises in brain imaging, measured the efficiency with which different parts of the brain communicated with each other.

He found impulses travelled fastest in smarter people and slower in those who were less intelligent.

He said: ‘High integration of brain networks seems to be associated with high IQ.

‘You pay a price for intelligence. Becoming smarter means improving connections between different brain areas but this runs into tight limits on energy, along with space for the wiring.’

Martijn van den Heuvel, assistant professor of psychiatry at Utrecht medical centre in Holland, who also studies how differences in the wiring of human brains affects IQ, said: ‘Increasing the power of the brain would take a disproportionate increase in energy consumption.

'It is risky to predict the distant future but it is clear there are tight constraints on intelligence.’

Friday, August 12, 2011

Fingering A Girl Techniques | Female Masturbation

Fingering A Girl Techniques | Female Masturbation
Fingering A Girl | Female Masturbation

Fingering A Girl Techniques is the manual manipulation of the clitoris, vulva, vagina, or anus for the purpose of sexual arousal and stimulation. It may constitute the entire sexual encounter or it may be part of mutual masturbation, foreplay or other sexual activities. To "finger oneself" is to masturbate in this manner. It is analogous to a handjob, the manual stimulation of the penis. These activities provide sexual pleasure, whether or not used as non-penetrative or penetrative intercourse.

Vaginal fingering is legally and medically called "digital penetration of the vagina," and may involve one or more fingers.

Outside the vagina
Massage of the vulva, and in particular the clitoris, is the most common way for a woman to reach and achieve an orgasm. The clitoral body or shaft may be massaged, usually through the skin of the clitoral hood, using up-and-down, side-to-side, or circular motions.[1] The labia and the rest of the genitals are also stimulated by massage and fingering.

Inside the vagina
Fingering the vagina is often performed in an effort to stimulate the G-Spot or A-spot. Fingering the external tissues is more likely to lead to orgasm for many women. The G-Spot is located roughly 5 cm up on the anterior wall of the vagina, forwards toward the belly button. It can most easily be recognized by its ridges and slightly rougher texture compared to the more cushion-like vaginal cavity walls around it. The A-spot is located deeper in the vagina, on the same wall as the G-Spot, where the vaginal wall starts to curve upward (the entrance to the anterior fornix).

Fingering the G-Spot is a commonly cited method that can often lead to female ejaculation. This release of fluid can range significantly in quantity and force of expulsion, varying from woman to woman and also varying with different scenarios for each woman. The fluid following a G-Spot ejaculation is released from the urethra but is not urine, as its contents do not come in contact with those of the bladder at any stage. This female ejaculate contains antibodies otherwise only found in the male prostate, leading to speculation that it is produced by a structure homologous to the prostate. Parallels are sometimes drawn with the fingering or other manipulation of the male prostate through the anus. Fingering the A-spot is a relatively uncommon method that can often result in rapid lubrication and arousal without any other stimulation. If stimulation is continued, it can also result in orgasm.

Some women have cited the "come hither" approach as a significant catalyst to orgasm. This technique involves the middle finger, sometimes additionally the index finger, making a hand gesture like "come here" with the palm facing upwards against her pubic bone. There is no technique for stimulating the G-Spot or A-spot that is preferred by all women.

Medical professionals suggest washing the hands before contact with the vagina, to avoid spreading bacteria and causing infections. Worthy of special attention is the washing of hands after any finger contact with the anus, to avoid the spread of bacteria from the anus to the vagina.

Anal fingering
The practice may be pleasurable because of the large number of nerve endings in the anal area, and because of the added stimulation gained from stretching the anal sphincter muscles while inserting the finger.

A good quality sexual lubricant is advisable to both increase the pleasurable sensation and aid insertion. Some people prefer to simply stimulate the outer ring of the anus, while others will follow this by inserting one or more fingers. Fingering may be seen as an act in itself, or as an arousing prelude in preparation for further anal sex. Anal fingering can arouse the receiver, allowing them to relax their anus and prepare them for the insertion of a penis or any other sexual instrument.

Anal fingering is also an effective way of stimulating the prostate gland in males, and thus may bring the receiver to orgasm. Anal fingering can also stimulate the perineal sponge in females.

The practice is generally considered 'safe sex' as long as the hands are protected with latex gloves. The nails should be trimmed and filed; long, sharp or jagged nails can cause cuts, injury, or severe infection. If there are cuts, infections, or open wounds on the fingers extreme protection and care is necessary. If finger cots are used they may slip off and remain inside the receptive partner. The hands should be thoroughly washed with soap and warm water before practicing any other activity to avoid spreading bacteria or germs. In stimulating both the anus and vagina, separate latex gloves are to be used for each so as to avoid cross contamination.

Fingering A Girl Techniques | Female Masturbation Videos