Category Archives: Clock Tutorials

This post (written on August 13, 2005) describes the basic theory behind photoperiodism and some experimental protocols developed to test the theory.

Continue reading →

This post (click on the icon) was originally written on May 07, 2005, introducing the topic of neuroendocrine control of seasonal changes in physiology and behavior.

Continue reading →

This is the sixth post in a series about mechanism of entrainment, running all day today on this blog. In order to understand the content of this post, you need to read the previous five installments. The original of this post was first written on April 12, 2005.

Continue reading →

This is the fifth post in a series about mechanism of entrainment. Originally written on April 11, 2005.

Continue reading →

The fourth post in the series on entrainment, originally written on April 10, 2005, explains the step-by-step method of constructing a PRC.

Continue reading →

The third post in the series on entrainment, first written on April 10, 2005, starts slowly to get into the meat of things…As always, clicking on the spider-clock icon will take you to the site of the original post.

Continue reading →

This is the second in a series of posts on the analysis of entrainment, originally written on April 10, 2005.

Continue reading →

Going into more and more detail, here is a February 11, 2005 post about the current knowledge about the circadian organization in my favourite animal – the Japanese quail.

Continue reading →

This post was originally written on February 11, 2005. Moving from relatively simple mammalian model to more complex systems.

Continue reading →

This February 06, 2005 post describes the basic elements of the circadian system in mammals.

Continue reading →

This post from February 03, 2005 covers the basic concepts and terms on entrainment. This is also the only blog post to date that I am aware of that was cited in a scientific paper.

Continue reading →

I wrote this post back on February 02, 2005 in order to drive home the point that the circadian clock is not a single organ, but an organ system comprised of all cells in the body linked in a hierarchical manner:

Continue reading →

I wrote this post back on January 23, 2005. It explains how clock biologists think and how they design their experiments:

Continue reading →

This post is a modification from two papers written for two different classes in History of Science, back in 1995 and 1998. It is a part of a four-post series on Darwin and clocks. I first posted it here on December 02, 2004 and then again here on January 06, 2005:

Continue reading →

This post about the origin, evolution and adaptive fucntion of biological clocks originated as a paper for a class, in 1999 I believe. I reprinted it here in December 2004, as a third part of a four-part post. Later, I reposted it here.

Continue reading →

This post, originally published on January 16, 2005, was modified from one of my written prelims questions from early 2000.

Continue reading →

This is the third in the series of posts designed to provide the basics of the field of Chronobiology. This post is interesting due to its analysis of history and sociology of the discipline, as well as a look at the changing nature of science. You can check out the rest of Clock Tutorials here.

Continue reading →

This is the second in the series of posts designed to provide the basics of the field of Chronobiology. See the first part: ClockTutorial #1 – What Is Chronobiology and check out the rest of them here – they will all, over time, get moved to this blog.

Continue reading →

This is the first in a series of posts from Circadiana designed as ClockTutorials, covering the basics of the field of Chronobiology. It was first written on January 12, 2005:

Continue reading →

Going into more and more detail, here is a February 11, 2005 post about the current knowledge about the circadian organization in my favourite animal – the Japanese quail.

Continue reading →

This post was originally written on February 11, 2005. Moving from relatively simple mammalian model to more complex systems.

Continue reading →

This February 06, 2005 post describes the basic elements of the circadian system in mammals.

Continue reading →

I wrote this post back on February 02, 2005 in order to drive home the point that the circadian clock is not a single organ, but an organ system comprised of all cells in the body linked in a hierarchical manner:

Continue reading →

This post (written on August 13, 2005) describes the basic theory behind photoperiodism and some experimental protocols developed to test the theory.

Continue reading →

This post (click on the icon) was originally written on May 07, 2005, introducing the topic of neuroendocrine control of seasonal changes in physiology and behavior.

Continue reading →

This is the sixth post in a series about mechanism of entrainment, running all day today on this blog. In order to understand the content of this post, you need to read the previous five installments. The original of this post was first written on April 12, 2005.

Continue reading →

This is the fifth post in a series about mechanism of entrainment. Originally written on April 11, 2005.

Continue reading →

The fourth post in the series on entrainment, originally written on April 10, 2005, explains the step-by-step method of constructing a PRC.

Continue reading →

The third post in the series on entrainment, first written on April 10, 2005, starts slowly to get into the meat of things…As always, clicking on the spider-clock icon will take you to the site of the original post.

Continue reading →

This is the second in a series of posts on the analysis of entrainment, originally written on April 10, 2005.

Continue reading →

This post from February 03, 2005 covers the basic concepts and terms on entrainment. This is also the only blog post to date that I am aware of that was cited in a scientific paper.

Continue reading →

I wrote this post back on January 23, 2005. It explains how clock biologists think and how they design their experiments:

Continue reading →

This is the third in the series of posts designed to provide the basics of the field of Chronobiology. This post is interesting due to its analysis of history and sociology of the discipline, as well as a look at the changing nature of science. You can check out the rest of Clock Tutorials here.

Continue reading →

This is the second in the series of posts designed to provide the basics of the field of Chronobiology. See the first part: ClockTutorial #1 – What Is Chronobiology and check out the rest of them here – they will all, over time, get moved to this blog.

Continue reading →

Considering I’ve been writing textbook-like tutorials on chronobiology for quite a while now, trying always to write as simply and clearly as possible, and even wrote a Basic Concepts And Terms post, I am surprised that I never actually defined the term “biological clock” itself before, despite using it all the time.
Since the science bloggers started writing the ‘basic concepts and terms’ posts recently, I’ve been thinking about the best way to define ‘biological clock’ and it is not easy! Let me try, under the fold:

Continue reading →

This is the first in a series of posts from Circadiana designed as ClockTutorials, covering the basics of the field of Chronobiology. It was first written on January 12, 2005:

Continue reading →