Two Point Discrimination Paper

The two-point discrimination test of the skin is a simple test of the sensory nerve function. Two-point discrimination measures the individual’s capability to distinguish two points of stimuli presented at the same time. The importance of this study is the ability to tell of two points verses than one that pressing on the skin depends on two things: the concentration of the sensory receptors and the connections that the sensory nerve cells make in the brain. An esthesiometer or caliper; compass-type instrument was used to determine limits of two-point discrimination sensitivity in several skin areas on the subject's forearm, thumb and index finger. The

The two-point threshold differs across the human body, and in order to confirm that, I recorded the measurements of the two-point threshold for different parts of my body. The results were: 2mm for index finger, 10mm for palm, 31mm for neck, 18mm for foot, and 40 mm for thigh. Following that, I reasoned that the differences in the measurements exist due to the unbalanced representations of different body parts in our somatosensory cortex.

* Sensations: The cutaneous sensations like touch, pressure, vibration, pain, cold, hot, etc, are felt by the skin.

A mechanoreceptor in the papillary layer of the dermis that responds to fine touch is a

The human sense of touch is known as the somatic or somatosensory system. The skin is the biggest and most complex organ in the somatosensory system.The somatosensory system permits the human body to experience pressure, texture, temperature, and pain, and to see the position and development of the body's muscles and joints.The receptor cells in the skin can be separated into three useful classifications: mechanoreceptors that sense pressure and surface, thermoreceptors that sense temperature, and nociceptors that sense pain. Thermoreceptors distinguish changes in temperature utilizing two sorts of receptor cells: warm and cold. Thus, thermoreceptors on the skin detects the temperature signal using two specific receptors cell: warm and cold.

Think of Cairns and you immediately picture beaches and sunshine. What better to add to the mix than nudity? In Cairns, the unofficial nude beach is Buchan Point Beach or colloquially, Buchan's, just north of Buchan Point, and at the point where a driver first glimpses a breath taking vista of beaches stretching all the way north to Port Douglas.

In conclusion the relationship between the properties of skin and friction skin impressions is that without these characteristics or capabilities fingerprints wouldn’t exist. The

Fell's Point is a waterfront neighborhood in the south-eastern area of the city of Baltimore, Maryland. Addicted to shop till you drop? The area features many shops including antique stores for the collectors. Hungry for food? Try their gourmet restaurants and coffee bars for the caffeine lovers. For music aficionados, their music stores is a must visit. There are also a municipal markethouse with individual stalls, and over 120 pubs for the night owls. Fell's Point is a waterfront neighborhood is a happening place with many attractions to cater to all walks of life. Check out their hotels and vacation rentals from

Somatosensation is the collective sense of touch which enables us to feel our environment through the specialized receptors in our skin. While in primates, the glabrous hairless skin of the hand palm and fingers serves as sensory organ to palpate objects and obtain tactile information, rodents use their whiskers, organized in a series of rows and columns on the whisker pad located on each side of the snout (Fig.X). Rodent whiskers acquire somatosensory information by their deflection onto objects in the environment, like the digits of the human, they obtain information regarding their shape, texture and location. Somatosensation is an active process involving sensory/motor systems, where in humans a hand will press an object of interest in order to feel its textile features, the rodent macrovibrassae (whisker) will position itself in space, scanning the environment in a series of timed protractions and retractions cycles (5-10Hz). The interruption of the whisking cycle caused by the contact of a whisker onto an object provide the necessary spatio-temporal information for the construction of a sensory percept. A whisker touch contains numerous information carried out by the amplitude of the whisker deflection, the direction, duration, accelation/decelaration on contact, frequency of the contact, force along the axial shaft and resonance frequency of the whisker.

At first, I did the experiment only on the index finger. But after I took photos of 11 teacher’s index finger, only one of them have a tiny mid-digital hair on their index finger. It means that only 9.1% have mid-digital hair on their index finger. This result is related to the article, in 1973, a scientist named Ikoma suggested that less than one percent of people have

In the research article “Physiological Properties of Afferents From Tactile Hairs on the Hindlegs of the Locust”, Newland investigated how particular physiological properties of locust tactile hairs transmit different information. The overall aim of Newton's research was to investigate how local networks of interneurons process sensory signals from afferent tactile hairs to preserve information encoded by understanding the physiological properties of the tactile hairs themselves. Newton outlined two primary findings derived from his research that related to the overall aim of the experiment.

I came up with the idea of doing a pointillism of my cat because I did a pointillism three years ago in an art class at the school. While doing this pointillism, I discovered that I actually really enjoy making them and I love the fact that an entire piece of art can be created from just beginning with a single dot. Doing a pointillism of my cat is an important idea to me because my pets are a huge part in my life. Growing up I’ve always been surrounded by animals whether it be cats, kittens, dogs, puppies, hamsters, fish, geckos and frogs. Cats have always strongly stood out to me as my favourite animal and my cats provide me with so much love so I wanted to make a piece of art to remember one of my cats by. I started working on this pointillism simply because I was bored one day and really felt like creating a pointillism was a good way to make the time pass, since they take a long time to do and they require constant work. The first idea that popped into my mind was a pointillism of my cat,

In other research, eccrine sweat, together with oily substances forms an impression of the finger ridge pattern when a finger touches a surface, known as a latent fingermark (Hazarika & Russell 2012). For enable the latent fingermark to visualize, physical or chemical treatments are required

Have you ever wondered how handedness and eye dominance are associated? Do these things have anything to do with your eyes sensitivity levels? This experiment will explore these questions and more by comparing how sensitive your eye is and how far your peripheral vision can span with left and right eyes. I will also find if ocular dominance has any play into peoples peripheral vision and how far they can see left or right. In this case, eye dominance is the variable, and the peripheral vision span will affect the variable by seeing if left or right dominant eyes can see farther in peripheral vision than the non-dominant eye

You will use a two-point discrimination test to compare tactile resolution (and receptor density) on various parts of your body. An estheiometer is