What Is Circadian Rhythmicity?

Time, what is time, and why is it important? Well time is a concept that humans’ brains can perceive, in fact their brains basically construct the past, the present, and the future. Basically, time is a measurement system, and without it the human race wouldn’t have ever existed. Humans have a very simple understanding of time, and they still do not understand its full potential. Humans only understand the measurement of time, and the manipulation and capturing of time overwhelms them. To this day the only way humans have captured time is their memory, and even then they still get it wrong sometimes.

Again I agree with Carr’s theory on changing the brain’s thought processes because the proof is in the history of mankind. When Carr stated the fact of how the clock had made a huge impact on how we go about our day, I realized its significance. Modern culture is completely shaped by time, when we eat, sleep, work, and much more. I have seen this first hand when I worked with Native Americans. They do not rely on time frame, and kind of live, work, and do as they feel and the setting of day. Knowing the clock has made such a huge impact on our lives, I

Time is viewed in many different ways. Some would say that time seems to fly by too fast; others would say that time drags on. Everybody has a different perspective on what time feels like and just as it is to be expected, time affects people in many different ways. Certain people are affected by events everyday in life. Somebody might have experienced a loss in the family.

Timing is everything they say, well what exactly is time? So I decided to do some research and look up the definition on Oxfords Dictionaries to see what the exact meaning of time is. Time is the “indefinite continued progress of existence and events in the past, present, and future regarded as a whole” it also means “a point of time as measured in hours and minutes past midnight or noon” (Oxfords Dictionaries). The thought about time and the concept of it came to my mind today because it actually happened to be the last day of daylight savings. It made me wonder what is time and does it really exist and why do we have daylight savings. Is time something created by man or nature, or could it all just be an illusion inside your brain.

Hamsters are nocturnal, being most active at dawn and dusk, but their schedule can be modified a few

The circadian clock in monarch not only determine when an adult butterfly will emerge from its chrysalis, but it is also involved in the time-compensated sun compass. Previous studies have shown that circadian clock provides the internal timing deceive that allows the butterfly to correct their fight orientation. If the circadian clock in the monarch is destroyed, it destroys the migrant’s ability to calibrate their orientation based on time of day. The circadian clock mechanism is known in the butterfly, it relies on a negative transcriptional feedback loop that involves the transcription factors CLOCK (CLK) and CYCLE (CYC), which drive the expression of period(per), timeless (tim) and a vertebrate-like cryptochrome, designated cry2. The translated

Circadian rhythms are the bodies' biological internal clocks encoded within us during a 24 hour cycle interval that accommodates to our body’s natural fluctuations in a physical, mental, behavioral, and physiological form and is prominently influenced and modified in accordance to marginal potencies and stimuli reflective of probable and irrepressible variables in our natural world that can be used as the determinant for an individual’s specific developmental, communicative, and interactive compositions.

The pineal gland also plays a key role in regulating animal circadian rhythms, which vary across species. Melatonin is synthesized from serotonin by N-acetyltransferase. In mammals, N-acetyltransferase activity is stimulated in the CNS by sympathetic nerves stemming from the superior cervical ganglion, whereas in birds, the N-acetyltransferase “control switch” appears to lie within the gland itself (Deguchi, 1979).

Like all other species, we are no different than other animals that need sleep in order to function throughout the day. However, there are other animals that do not need sleep,

The beaver is mainly a nocturnal animal – they hunt and work during the night.

We plan our day around different times of the day. Time tells us when to eat, when to sleep, and how long to do things for. If time were based on these simple terms, then this mysterious enigma would not be in debate. There are the issues of space and time; what is the relationship

The saying is that time flies when you’re having fun. A year can seem like an eternity to a young boy, but can seem like a mere millisecond to someone else. As Alan Moore wrote in Watchmen, “There is no future. There is no past. […] Time is simultaneous, an intricately structured jewel that humans insist on viewing one edge at a time, when the whole design is visible in every face” (Moore and Gibbons). Different perspectives on time exist, each of which influence the way that we as people perceive life, the universe, and everything that surrounds it. We as Humans forget that there are many different ways to perceive something, not just our own; experiences, situations, desirability, or even hallucinogenic or psychotropic drugs can create or alter a perception of time that’s different to the one that’s generally accepted. With this in mind, it’s clear that perceptions regarding the flow of time aren’t static; they’re purely subjective, unique to each individual who experiences it.

Well it is very essential that all of us drive out a balance between our biological clock and the ticking clock, that decides our day to day activities. However, before this, we first need to identify our biological clock.

Light acts on photoreceptor cells of the pineal organ and retina, which allows synchronization of their internal molecular clocks. Light might also impact on other possible photosensitive and circadian structures in the ventral diencephalon (POA and hypothalamic area) and peripheral organs. In response to the photoperiodic information, the retina and the pineal organ elaborate two types of rhythmic information. The neural information (blue arrows) from the retina and pineal organ reach the ventral diencephalon through the retinohypothalamic and the pineal tracts, respectively. This information provides an indication of day length, as well as of subtle variations in ambient illumination. The hormonal information is relayed by melatonin the production of which reflects day length and season. In the retina, melatonin is an autocrine and/or paracrine factor, which is metabolized locally. Pineal melatonin is released into the cerebrospinal fluid and blood, and acts on specific targets through melatonin receptors. In the hypothalamus, melatonin might contribute to synchronizing the activities of circadian oscillatory units [SCN and others and modulating the production of pituitary gland releasing factors. Melatonin receptors have been identified in areas that impact on pituitary function, including the POA, which also receives nervous input from both the pineal organ and the retina. Melatonin impacts on the pituitary gland itself to

Nocturnal animals are more active at night than daytime. These animals sleep during daytime and hunt their food at night. They have special adaptation that helps them to survive at night. They prefer to come out at night to escape the daytime heat though some nocturnal animals can be seen during the day and others spend the whole day resting or sleeping.