Author Archives: Brynhildur Jonsdottir

When the right hand doesn’t know what the left one is doing: Dr. Strangelove’s affliction

In this video-clip from Stanley Kubrick’s film, “Dr. Strangelove”, we see the character from whom the movie derives its name, struggle to keep his right arm in check, as it repeatedly tries to give the Nazi salute. It literally seems … Continue reading

Posted in Alien-hand syndrome, Corpus callosum, Parietal lobes, Self-awareness and consciousness | Tagged , , , , , | Leave a comment

Sleep disorders in Alzheimer’s disease: chicken or egg?

The sleeping brain Sleep has a vital restorative function, important for optimal day-time functioning. The brain’s activity during sleep can be detected with a device called electroencephalogram (EEG), which measures and records the electrical activity in the brain. EEG studies … Continue reading

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When the brain refuses ownership of a limb: Amputee wannabes

To most of us the thought of an amputation of one of our healthy limbs is horrid. To a selected few, otherwise healthy and undelusional people, an amputation of a certain limb, at a specific level, is a dream come … Continue reading

Posted in Apotemnophilia, Body integrity identity disorder, Superior parietal lobule, Xenomelia | Tagged , , , , , , , | 4 Comments

Does playing soccer cause brain injury?

The skull forms a cavity for the brain and protects it from outside harm. The cerebrospinal fluid surrounds the brain and acts as a shock absorber, preventing damage to the brain when colliding with the skull. If an external force … Continue reading

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Education protects against age-related decline in brain size

Like I told you in this post here, our brain begins to shrink in our thirties and continues to do so progressively faster throughout our lifespan. One brain-structure that seems to be especially sensitive to the impact of aging is … Continue reading

Posted in Brain health, Hippocampus, Learning and memory | Tagged , , , | Leave a comment

Some people have absolutely no sense of direction: Topographical agnosia

There are people who have absolutely no sense of direction. Their disorientation can be so comprehensive that they may not be able to navigate around their own home and can get utterly lost in their own street. This neurologically based … Continue reading

Posted in Agnosia, Topographical agnosia | Tagged , , , , | 1 Comment

Help! My beloved mother has been replaced by an alien: Capgras syndrome

Imagine looking at your mother, knowing in your gut that even though she looks exactly like your mother, moves and talks in the same way your mother does and has all the same habits, she just isn’t your mother. This … Continue reading

Posted in Capgras syndrome, Cingulate gyrus, Fusiform Gyrus, Occipital lobes, Parietal lobes, Prosopagnosia, Temporal lobes, Visual cortex | Tagged , , , , , , , | 2 Comments