The human body displays various reactions that are characterized by opposing tendencies. Such aspects affect flight and fight reactions, feeling of being hungry, and nerve firing among many other body processes. This paper will use psychological and physical mechanisms to explain how various opposing proceedings apply to the automatic nervous system, color vision, drug use etc.
Automatic Nervous System
When it comes to the automatic nervous system, it can be characterized as a psychological activity where it arouses the body to respond to a stressor, for example, being chased by a wild dog. While the sympathetic nervous system works by stimulating the body, the parasympathetic one, on the other hand, calms it after danger. When a person faces perils, it is the responsibility of the automatic nervous system to produce adrenaline and norepinephrine into the bloodstream that are accountable for fight and flight. They primarily calm the organism to return to the normal state after the incitement. Physiologically, the parasympathetic nervous system quiets, counteracts the sympathetic one, and assists a person to appease.
Color Vision
According to the opponent process theory by Ewald Hering, cone photoreceptors are connected together with opposing colors. These include blue/yellow, red/green, and black/white. As is indicated by the notion, the main goal of the color vision is to show the rival aspects. This is a physiological procedure where the light hits the back of an organism’s eye where luminescence or darkness are detected. When it comes to vision, cells oppose one another for some colors. For example, when a person is exposed to red, they see an image of the adverse color that is green. Staring at blue causes an individual to perceive an after image of yellow. In this case, opposite colors allow the vision that includes red-green, and yellow-blue among others.
Drugs
Drug dependence is a psychological act when a subject takes narcotics to feel good. They become dependent and have to use them for survival. With a regular exploitation of some elements, people get to tolerance levels where they require more pharmaceuticals to attain a euphoric feeling. In some cases, they have experienced much pain while others have died because of the withdrawal symptoms. Drugs give an intense pleasure despite the fact that they may also provoke pain. With a long time of taking substances, the initial reactions get weaker and weaker and negative feelings set in. The body, in this case, compensates the poison by producing the stimulant and bringing the body back to the dysphonia state.
Nerve Firing
Nerve firing happens when the excitatory neurotransmitters stimulate the nerves to release endorphins. In various ways, it can display an opposing action when potential measures occur. When endorphins let out, they cause signals in an organism. Since neurons have a little negative charge, sodium ions are issued through the ion channels. When this happens, the elements turn positive and then depolarize. This period is known as the refractory one when the action cannot take place again. The work of the inhibiting neurotransmitters, in this case, is to inhibit the firing of the neurons.
