From disorder categories to symptom networks

Picture 1: DSM VI symptom network from The Diagnostical Statistical Manual of Mental Disorders (currently in its 4th edition – DSM-IV) ( is a guide for psychologists to infer what type of mental… Continue reading

How does sound influence our sleep?

This quora question just got my attention and here is my contribution in an attempt to answer it. There are different studies representing different ways on how sound might influence one’s sleep or… Continue reading

Sleep research and consciousness

The human brain… 100 billion neurons and an “infinite” amount of networks arising from communication between these neurons. To think there is something outside that, the mind as something separate from the brain… Continue reading

How come hibernation doesn’t have a restorative function?

While reading an article on HowStuffWorks about hibernation (a state of energy conservation characterised by a lower body temperature, slower breathing, lower  metabolism…), I was a bit puzzled by the following sentence “When an animal… Continue reading

The stages of sleep

When evaluating sleep, a distinction is made between different sleep stages. These sleep stages are based on electrical brain activity as measured by electroencephalography and the sleep scoring rules provided by the American Association… Continue reading

Is there proof that slow wave sleep is beneficial?

There have been some studies that attempted to interfere with slow wave sleep while keeping other sleep parameters intact, e.g. sleep duration, REM-sleep, stage 1-2 sleep duration, nocturnal awakenings… Such studies have revealed… Continue reading

From functional localization to functional networks

Patient H.M. (also see website about project HM: the brain observatory) is a famous case study taught in every introductory psychology textbook about a man who was unable to form new long term… Continue reading

Human brain and gene expression

Today a TED talk of Allan Jones was posted. Since my love for open source (a love that I’ve already mentioned numerous times, but not enough however) I want to share this talk… Continue reading

Do people who sleep more than average have better memory?

In search of answers on many questions that pop into my mind, I came across Quora. This is a great Q(uestions)&A(nswer) site on a wide range of interesting topics. Although I’ve only answered two… Continue reading

Donating knowledge

I’m utterly happy about the evolution in open source education and research, making learning and knowledge available for everyone. One important aspect however is that the quality of such open sources remains high,… Continue reading