Outlook Hemorrhoids, also known as piles, are swollen veins in the lower part of the anus and rectum. When the walls of these vessels are stretched, they become irritated.
Seminar Available on this topic. In many cases, the speed with which a person can respond, "reaction time," is the key to assigning liability.
It is common practice for accident reconstructionists simply to use a standard reaction time number, such as 1. In fact, reaction time is a complicated behavior and is affected by a large number of variables. There can be no single number that applies universally. Reaction time is a surprisingly complex topic.
Unfortunately, most "experts" used canned numbers without a good appreciation for where the numbers originate, how they were obtained or the variables that affect them. Moreover, there are several distinct classes of reaction time, each with somewhat different properties. In this article, I briefly describe some keys issues.
The discussion focuses primarily on driver reaction time. For example, it is the time required for a driver to detect that a pedestrian is walking across the roadway directly ahead and to decide that the brakes should be applied.
Mental processing time is itself a composite of four substages: Best reaction times are also faster for auditory signals than for visual ones. This stage likely does not result in conscious awareness.
In some cases, "automatic response," this stage is very fast. In others, "controlled response," it may take considerable time. In general, novel input slows response, as does low signal probability, uncertainty signal location, time or formand surprise. For example, once a driver recognizes a pedestrian in the road, and combines that percept with knowledge of his own speed and distance, then he realizes what is happening and what will happen next - the car is heading toward the pedestrian and will possibly result in a collision unless action is taken.
Selection of the wrong memory schema may result in misinterpretation. Response selection and programming: Conversely, practice decreases the required time. Lastly, electrophysiological studies show that most people exhibit preparatory muscle potentials prior to the actual movement.
In other words, the decision to respond occurs appreciably faster than any recordable response can be observed or measured. These four stages are usually lumped together as "perception time," a misnomer since response selection and some aspects of situational awareness are decision, not perception.
Movement Time Once a response is selected, the responder must perform the required muscle movement. For example, it takes time to lift the foot off the accelerator pedal, move it laterally to the brake and then to depress the pedal.
Several factors affect movement times. In general, more complex movements require longer movement times while practice lowers movement times. Finally the Yerkes-Dodson Law says that high emotional arousal, which may be created by an emergency, speeds gross motor movements but impairs fine detailed movements.
For example, a driver stepping on the brake pedal does not stop the car immediately. Instead, the stopping is a function of physical forces, gravity and friction. Suppose a person is driving a car at 55 mph He sees a pedestrian and applies the brakes. What is the shortest stopping distance that can reasonably be expected?Globus sensation is an overwhelming feeling of a lump lodged in a person's throat, even when nothing is there.
It is not painful, but it is annoying. Causes include inflammation, stress, and.
Hemorrhoids or piles are common irritations around the rectum and can be extremely painful. They are internal or external and can get bigger if not treated correctly and promptly. Find out here. Orgasm (from Greek ὀργασμός orgasmos "excitement, swelling"; also sexual climax) is the sudden discharge of accumulated sexual excitement during the sexual response cycle, resulting in rhythmic muscular contractions in the pelvic region characterized by sexual pleasure.
Experienced by males and females, orgasms are controlled by the involuntary or autonomic nervous system. Definition Debridement is the process of removing dead (necrotic) tissue or foreign material from and around a wound to expose healthy tissue.
This article, written in early , is the best currently available overview of MDMA neurotoxicity. It is from the excellent book Ecstasy: The Complete Guide edited by Julie Holland which contains a number of very interesting articles on the topic of MDMA, its complications, and its potential as a psychiatric medication.
Mattew Baggott's article on neurotoxicity was written as he was. 2. CRIMINOGENIC FACTORS FOR JUVENILE OFFENDERS study guide by chantelle_de_lange includes 40 questions covering vocabulary, terms and more. Quizlet flashcards, activities and games help you improve your grades.