We've recently published a paper titled "Electroencephalographic Response to Sodium Nitrite May Predict Delayed Cerebral Ischemia After Severe Subarachnoid Hemorrhage" on how electroencephalography (EEG for short) can be used to figure out which patients with a certain type of stroke (subarachnoid hemorrhage) will develop a complication after the initial brain bleed and which will not. … Continue reading Predicting trouble: EEG, NO and stroke
As easy as breathing? It may seem like it, but breathing is actually no easy process. It involves the precise integration of several systems, including, of course, the pulmonary and cardiovascular systems (gas exchange and transport, respectively). However, it also requires the direct involvement of the central nervous system: the brain. The drive to breathe … Continue reading Breathing on the brain
I use MATLAB for my number crunching. While data acquisition and analysis programs such as Spike and LabChart have analysis functions that are good, they are not always appropriate for the type of analysis required. Also, I like to know all the calculations made on my raw data, and so my analysis tends to gravitate towards custom-made … Continue reading MATLAB for physiological analysis
The supply of oxygen (O2) is crucial for life and there are two ways O2 can be carried in blood: dissolved or combined with hemoglobin. Dissolved O2 can only supply a fraction of what the human body needs. One mL blood holds only about 0.003 mL O2 at a partial pressure of oxygen (PO2) of … Continue reading Hemoglobin: a gamechanger
Bird's eggs contain everything that the chick needs, except oxygen. So how exactly does the egg 'breathe'? First, the shell needs to be permeable to gases. The shell consists of a calcium carbonate outer layer, with two shell membranes beneath. A typical outer shell of a hen's egg holds about 10,000 pores, each less than … Continue reading How do eggs breathe?
One of the things I want to do with this blog is to present a few basic animal physiology topics, in random order. The official reason is that I believe it is important as a scientist to look outside one's niche every once in a while. The unofficial reason is that taking a step out … Continue reading Taking a walk on the wild side