1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sweet-ann [11.9K]
3 years ago
14

According to a study by Kelly et al. (1999), naval personnel on submarines were asked to function on 18-hour "shifts": 6 hours o

f work, 6 hours of recreation, and 6 hours of sleep. What happened to their circadian rhythms?
Social Studies
1 answer:
Fiesta28 [93]3 years ago
3 0

Answer:

In this study carried out by Kelly and colleagues, and published in 1999, called: "Nonentrained Circadian Rythms of Melatonin in Submariners Scheduled to an 18-Hour Day", the results showed that the human body tends to always adjust its circadian rythm to 24-hour cycles, sometimes a bit longer, and they respond normally to different stimuli, like lights, clocks and social interaction. However, on these submariners, from the Trident, a nuclear submarine, who had been forced to adjust to 18-hour schedules, the production of melatonin, the sleep-inducing, and circadian-cycle mediator, and the mediation of the weak-sleep process, would still follow a 24.35 hour cycle. This, of course, produces problems with the circadian rythm and it also showed that these submariners´ circadian rythms would not respond to external stimuli, like clocks and social contact, when forced to adapt to thte 18-hour cycle.

Explanation:

Humans are geared to respond to the cycles of light and dark, and the production of melatonin, to either wake up, or sleep. This wake-sleep process follows a pattern and a cycle, which normally follows a 24-hour rule. When schedules mess with this cycle, through the use of bright artifical lights, and other stimuli, this process is affected, producing a lot of stress-like reactions from the body itself. In these submariners that were studied, it was seen that the circadian cycle would still follow the 24-hour pattern, but the officers were forced to adapt to an 18-hour cycle, which meant that negative effects were brought to their bodies, as they were not working under natural conditions.

You might be interested in
10. The Ohio Constitution gives Ohioans
Kisachek [45]
Yes it does imply that they have responsibility
8 0
2 years ago
Georgia’s leading industry continues to be _____________________.
DanielleElmas [232]

Answer:

Georgia’s leading industry continues to be agriculture

Explanation:

8 0
3 years ago
A students changing level of interest and background knowledge in algebra, during a study on the effects of response card quiz r
Tcecarenko [31]

Answer: 3) Confounding variable

Explanation:Confounding variable is the variable that indicates about the external influential factors that produces the manipulated consequences of independent and dependent variable.This variable can lead to producing useless outcomes in an experiment.

According to the question, the changes occurring in interest of student in algebra can be due to the outside factors which are not generating the actual results and thus, experiment is getting ruined.

Other options are incorrect because application variable remain same for the experiment,system variable are the variables of certain system and reliability variables describe about the variable on which dependent or stable.Thus, the correct option is option(3)

8 0
3 years ago
Gian's parents have noted that he seems to have a hard time socially relating to his peers as he cannot seem to understand other
soldier1979 [14.2K]

The  following is what is parents might be concerned about is:D. Autism spectrum disorder.

<h3>What is Autism spectrum disorder?</h3>

Autism spectrum disorder can be defined as a disability or disorder that makes it difficult for a person to communicate or interact with others.

A person suffering from autism disorder have difficult learning and understand people perspectives and they tend to find it hard relating with people.

Inconclusion the  following is what is parents might be concerned about is:D. Autism spectrum disorder.

Learn more about Autism spectrum disorder here:brainly.com/question/9869588

7 0
2 years ago
If you were Shakespeare what would you create that would represent the Renaissance and be relevant today?
Feliz [49]

Answer:

i would create A Electrical device like a robot which would help people clean there house or doing all the work they want.

Explanation:

please follow me and mark me as BRAINLIEST

4 0
3 years ago
Other questions:
  • Juanita participated in a psychology research project that involved solving a number of arithmetic problems. during the experime
    8·1 answer
  • Based on data and research what are the highest areas of Poverty in:
    9·1 answer
  • Which eating disorder is most closely associated with electrolyte imbalances?
    10·1 answer
  • By the fifteenth century, Muslim merchants controlled most of the spice trade with Western Europe. These spices originated from
    14·1 answer
  • Cual es la diferencia entre un mapa y un globo terráqueo?
    8·1 answer
  • Which theory of attraction suggests that long-term relationships are likely to continue when both partners are committed and put
    13·1 answer
  • What does Mrs. Johnson want Lincoln to do?
    9·1 answer
  • Help pls thanksssssss &lt;333 help
    10·1 answer
  • How can you tell that this is part of the story's climax?
    7·1 answer
  • Information from a study that has not gone through any interpretation or processing is said to be __________ data. a. raw b. use
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!