Secrets Of Human Fingerprint Patterns And Ridges

A fingerprint from contact with a flat surface. The contact occurs only along the summits of the epidermal ridges. This contact pattern results in a particular filtering of tactile information during active exploration of a surface. Image Credit: Science/AAAS)

Secrets Of Human Fingerprint Patterns And Ridges

Two articles about fingerprints and their patterns hold unique secrets and understanding about humans on this Oblate Spheroid.

One study released last week addresses why they are what they are, why and how ridges and receptors combine to give a person a more detailed understanding of feel and touch.

The other discusses how the print pattern of a group of fingers (laid out in patterns defined as whorls and waves) might say about a person and his/her destiny uncovered in an ancient Asian belief.

Do identical twins have identical fingerprints? - Identical twins have fingerprints that can be readily distinguished on close examination. However, the prints do have striking similarities. In fact, before the arrival of modern genetic testing, similarity of fingerprints was often used to determine whether twins were identical or fraternal. Image Credit: Nick McGlynn

This excerpted and edited from CBC News -

Fingerprints key to ability to process fine textures: study
Fingerprints don't exist simply to improve gripping ability or identify cat burglars - they may also act as a type of touch filter that improves perception, according to a new study.
CBC News - 30/01/2009 5:12:12 PM

The study, published in [last] Friday's edition of Nature, suggests that fingerprints may help perceive very fine textures more efficiently. Specifically, fingerprints can tune out vibrations outside a certain frequency so only very specialized touch receptors can pick them up.

These receptors, called Pacinian fibres, are involved in detecting fine features. But they also have the lowest spatial resolution of any of the receptors involved in touch. This means that, taken alone, they are the least able to distinguish between two closely spaced pressure points, a characteristic that appears to be a contradiction for a receptor involved with fine touch, the study says.

The researchers from the University of Paris think this is where fingerprints come into play. They said there is no way to experimentally measure stress under the skin on a finger, so they created a synthetic mechanical sensor instead. They then placed two types of rubber caps on top of the sensor - one smooth, and the other ridged like a fingerprint.

The sensor was then rubbed across a glass surface covered with patterned textures. They found that the sensor covered with the smooth cap picked up a large variety of vibrations. But in the case of the ridged sensor, it filtered out many of the vibrations picked up by the smooth cap and amplified them.

The researchers concluded that a typical set of fingerprints would produce vibrational frequencies in the range of 200 to 300 Hz. Pacinian fibres respond best to frequencies around 250 Hz, and would therefore be able to pick up these filtered vibrations.

"Fingerprints thus allow for a conditioning of the texture-induced mechanical signal which facilitates its processing by specific [touch receptors]," the study says.
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Amplification of the vibrations depends strongly on the orientation of ridges with respect to the movement of the finger. In the study, the ridges had to be oriented perpendicular to the direction of movement.

But the authors note that fingerprints are arranged in swirls, so that each region of the fingertip can achieve optimal orientation.

"Further studies are needed in order to elucidate how this may reflect on the exploratory procedures [such as fingertip trajectory and contacting zone] used by humans during texture evaluation tasks," the study says.
Reference Here>>

So, the study opines that the difference in a pattern and how it presents itself may effect the actual filtering sensation of touch.

On the actual way a group of patterns are laid out, the Chinese have devised a way to read personality & destiny traits by studying the waves and the circles that appear at the tips of everyone’s fingers.

Patterns for men are always analyzed from their left hands while women are analyzed from their right hands.

To make a reading, look at ones thumb print first, then the index finger, middle finger, ring finger and then the little finger, always in that order. This is the sequence that offers clues to ones destiny & fortunes of a life lived.

Chinese societies were so convinced that in earlier times the fingers of prospective daughters-in- law were carefully scrutinized by prominent families to ensure they did not unwittingly welcome women who had fingers that showed alternate whorls and waves on their fingers, as it was commonly believed that such women would bring trouble into the family, being particularly difficult to control and usually very aggressive. Image Credit: pcworx

This excerpted and edited from pcworx -

Finger Prints
By pcworx

Check yours…. It’s interesting

It is already an accepted fact that every single person in the world has a different set of fingerprints.
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For ease of reference we shall refer to whorls (aka, circles) as “O” and to waves as “W”.

Fingers: OOOOO (all whorls)
Means: This person is very confident, has a strong character and a hot temper. He/she is an independent person. The luck of this person changes dramatically in life from one period to the next. The undoing of this person will be his/her hot temper so it is vital that this person must learn to be patient and calm.

Shape: WWWWW (all waves)
Means: This person is a straightforward honest person who goes with the flow. The fingers indicate someone very sensitive, who is especially suited to design and creative work. People with these fingerprint patterns tend to be shy and uncomfortable in social situations, so are not suited to work in PR, politics or any kind of work requiring them to meet people.

Shape: OWWWO
Means: If you can choose a prestigious working career, you will be very successful. However, you should avoid the tendency to get big-headed and you must never take your career for granted. You should also watch your back, as you tend to attract jealousy into your life and could get betrayed. Always look for long-term benefits.

Shape: OWWOW
Means: You will need to work harder during the early days of your career. When you reach middle and older age, you will get recognition and wealth luck. So your life gets better the older you get.

Shape: OWOWW
Means: It is vital that you resist the tendency to be narrow-minded in your attitudes and in the way you think and work. Try to be humble and learn as much as possible. This is how you will get influential help that brings you to the peak of your business and career life.