What is the Hippocampus?

The hippocampus (named after its resemblance to the seahorse, from the Greek ἱππόκαμπος, “seahorse” from ἵππος hippos, “horse” and κάμπος kampos, “sea monster”) is a major component of the brains of humans and other vertebrates. Humans and other mammals have two hippocampi, one in each side of the brain. It belongs to the limbic system…

Autonomic Nervous System Definition

The term autonomic nervous system (ANS) refers to collections of motor neurons (ganglia) situated in the head, neck, thorax, abdomen, and pelvis, and to the axonal connections of these neurons. Autonomic pathways, together with somatic motor pathways to skeletal muscle and neuroendocrine pathways, are the means whereby the central nervous system (CNS) sends commands to…

What Is The Subthalamic Nucleus?

The subthalamic nucleus is a small lens-shaped nucleus in the brain where it is, from a functional point of view, part of the basal ganglia system. In terms of anatomy, it is the major part of the subthalamus. As suggested by its name, the subthalamic nucleus is located ventral to the thalamus. It is also…

What Is EEG (Electroencephalography)?

EEG is an acronym for electroencephalography, which is an electrophysiological monitoring method to record electrical activity of the brain. It is typically noninvasive, with the electrodes placed along the scalp, although invasive electrodes are sometimes used in specific applications. Electroencephalography measures voltage fluctuations resulting from ionic current within the neurons of the brain. In clinical…

What Is The Occipital Lobe?

The occipital lobe is one of the four major lobes of the cerebral cortex in the brain of mammals. The occipital lobe is the visual processing center of the mammalian brain containing most of the anatomical region of the visual cortex. The primary visual cortex is Brodmann area 17, commonly called V1 (visual one). Human…

Headaches After Eating

Food is meant to be enjoyed. It tastes good and it’s enjoyable to eat, which is why so many people eat so much. However, sometimes the food isn’t as enjoyable as it should be because of the consequences of eating it. Some people suffer from headaches right after eating, which takes all the enjoyment out…

What Is Cerebrospinal Fluid?

Cerebrospinal fluid (CSF) is a clear, colorless body fluid found in the brain and spinal cord. It is produced in the choroid plexuses of the ventricles of the brain. It acts as a cushion or buffer for the brain, providing basic mechanical and immunological protection to the brain inside the skull. The CSF also serves…

Headache or TIA Stroke?

When someone suddenly has a migraine for the first when they are nearing fifty or sixty its often the case that what they thought they had was a migraine headache when in fact it was actually a TIA. So, what is a TIA and how is it different then a migraine? TIA is the acronym…