The purpose of this experiment is to determine which body areas are well represented with touch receptors. For lab 1 (tactile localization), a student’s hypothesis was; If the marker is dotted on a palm, then this will be the most accurate tactile localization. The palm showed this characteristic partially but is not true. Based on the experiment, the palm was more accurate than half of the other locations. With the fingertip averaging 4 mm, back of the hand with 5.7 mm, the neck with 9.7 mm, then the palm of the hand with 11.4 mm and three other locations with greater average distances. So the hypothesis was incorrect, the correct hypothesis would be; “If the marker is dotted on the fingertip, then this will be the most accurate tactile localization.”
Somatosensation was defined in the lab manual as the sense of touch. The four types of mechanoreceptors that were discussed in class were the Merkel complexes, Ruffini endings, Meissner’s corpuscle, and the Pacinian corpuscle (Lab Manual). The Merkel complexes were slow adapting mechanoreceptors whose primary function was to discriminate the texture, or pattern of an object (Lab Manual). The Ruffini endings were also slow adapting mechanoreceptors, but their primary function was to differentiate finger position and stable grasps (Lab Manual). The Meissner’s corpuscle was a fast adapting mechanoreceptor whose primary
Therapeutic touch was developed by Dolores Krieger and Dora Kunz in the 1970s as a non-invasive nursing intervention (Kelly et al. 2004). Jackson and Keegan (2009, p.614) defined therapeutic touch as “a specific technique of centring intention used while the practitioner moves the hands through a recipient’s energy field for the purpose of assessing and treating energy field imbalance.” The original theory of the technique proposed by nursing theorist Rogers (1970) is that individuals as a unified whole have their own permeable energy fields that extend from the skin surface and flow evenly when they are healthy. The energy field of the ill physical body is disrupted, misaligned, obstructed or “out of tune” (Huff et al. 2006). TT has the potential to re-pattern, reorganize and restore the individual’s imbalanced energy fields through the open system extending from the surface of the body interacting with the environment constantly (Krieger, 1979). The earliest studies of healing touch were carried out in the 1950s and 1960s: biochemist Bernard Grad (1965) collaborated with famous healer Oskar Estebany to demonstrate the significantly accelerated healing effects of therapeutic touch on wounded mice and damaged barley seeds. The central aim of healing therapies is to relax and calm patients in order to activate patients’ natural healing ability, and it does not include any religious activity (Lorenc et al. 2010).
The first is electrotactile simulation(3). It uses localized electric currents to stimulate targeted nerves using surface electrodes. This method uses no mechanical parts making it light-weight, energy conserving and less noisy in comparison to other non-invasive tactile stimulation methods. The main disadvantage of electrotactile simulation is reported burning sensations from test subjects. The second type of non-invasive tactile stimulation is vibrotactile stimulation (2), which uses mechanical vibrations on the surface of the skin to convey tactile information using varied vibrations frequency, amplitude and duration. It is best-suited for myoelectric protsthetics as it does not interfere with electric signals. Conversely, it may not be suited for older users as their sensitivity to vibrations might be diminished. The final method for non-invasive tactile stimulation is mechanotactile stimulation, which provides the user with pressure or position feedback. It provides the most natural force sensation out of all of the types of non-invasive tactile stimulation but this method also involves the largest and most energy consuming equipment, making it highly impractical to
Part of the brain that perceives stimuli related to touch, pressure, temperature, and pain, as well as visual and auditory input.
...visual information is processed to extract identity, location, and ways that we might interact with objects. A prominent anatomical distinction is drawn between the "what" and "where" pathways in visual processing. However, the commonly labeled "where" pathways is also the "how" pathway, at least partially dedicated to action.
Tactile sensing is acquiring information via physical contact. Various parameters like pressure, position, temperature, shape, texture etc. can be measured using this. Despite being one of the five most crucial senses by which a being perceives its environment, comparatively not a lot of research has been done in this field with a scope of application in industries, especially robotics. This paper aims at briefly discussing the various techniques used in tactile sensing and then compares them. Next, different types of commercial tactile sensors, along with suitable performance criteria for their comparison are discussed. Finally, currently existing commercial sensors are talked about in detail, including the leading manufacturers, their products and the description of their data sheet.
These patterns occur only with intense stimulation. Because strong and mild stimuli of the same sense modality produce different patterns of neural activity, being hit hard feels painful, but being caressed does not. It suggested that all cutaneous qualities are produced by spatial and temporal patterns of nerve impulses rather than by separate, modality specific transmission routes. Gate control theory of pain states that stimulation by non-noxious input is able to nullify pain.
Weber, in his study of the senses, experimented with muscular sensations and cutaneous senses by way of the two-point threshold and the just noticeable difference. His research revealed that there could not be a direct connection between our perception of a physical stimulus and the stimulus itself.
Kelso (1995) developed a nonlinear dynamical model for finger wagging which explained and predicted behavioural results from finger wagging experiments. van Leeuwen (2007) has used nonlinear dynamics based analyses to explain perceptual
The Tarchanoff Response is a change in DC potential across neurones of the autonomic nervous system connected to the sensori-motor strip of the cortex. This change was found to be related to the level of cortical arousal. The emotional charge on a word, heard by a subject, would have an immediate effect on the subject's level of arousal, and cause this physiological response. Because the hands have a particularly large representation of nerve endings on the sensori-motor strip of the cortex, hand-held electrodes are ideal. As arousal increases, the "fight or flight" stress response of the autonomic nervous system comes into action, and adrenaline causes increased sweating amongst many other phenomena, but the speed of sweating response is nowhere near as instantaneous or accurate as the Tarchanoff response.
Therapeutic touch can be learned by anyone. Those who wish to become practitioners take special courses. The practitioner is taught to center himself, physically and psychologically, where he can find within himself an inner reference of stability. The pupil must learn to assess the patient by feeling hot, cold, tingling, congestion or pressure sensations in his hands when gliding through another person's energy fi...
First, one must have the five senses; taste, smell, hear, see, and feel. Yes, these are physical aspects, however, these senses are what any human needs to be, human. For example, the human body needs to be able to taste. It must ingest food, and the food must appeal to a decent taste. A human must also be able to smell, so one may smell a poisonous gas, delicious food, or any other stench that may linger in the air. To be able to hear, enables the human to hear danger or a noise that appeals to them. When seeing, danger is also noted as well as the care of others. When one feels, the object that is being felt may make the person feel comfortable. Not only the sense of touching, but feelings.
Interestingly, the same type of brain arousal takes place whether people actually do finger tapping or only imagine it. What surprised Sutton most, however, was the detection of remarkably similar activity in much larger networks spanning areas of the cortex dealing with both input from the senses and output signals to the muscles. "Patterns of activity in small, more primitive areas of the brain are recapitulated in larger, more advanced parts," Sutton says. "This means that nature did not have to develop new rules of operation for different levels of the brain from small clusters of cells to large systems."
Transition: As you probably already know, massage is best known for it’s physical benefits. The different methods are used to pin-point certain body parts directly. But mental and...
Vision plays a crucial role in everyday life of a regular individual. This is something that we can not neglect but more so it is important to state that touch receptor plays an essential role as well. There is a big difference between these two receptors; one can only observe the environment while the another one can make you feel your surrounding while keeping you safe through out the experience. Then again, what is the most important receptor that we have in our possession?