Drowsiness can resemble brain damage

12 Jun

According to an article in The Guardian:

“Damage to certain parts of the brain can lead to a bizarre syndrome called hemispatial neglect, in which one loses awareness of one side of their body and the space around it. In extreme cases, a patient with hemispatial neglect might eat food from only one side of their plate, dress on only one side of their body, or shave or apply make-up to half of their face, apparently because they cannot pay attention to anything on that the other side.”

The original paper can be found here. I am reminded of unihemispheric slow-wave sleep, a phenomenon seen in some birds where one brain hemisphere stays away while the other sleeps.

Here is a video of a stroke patient exhibiting hemispatial neglect in the clock drawing test:

 

 

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