Standing up can reveal cognitive difficulties.

Unmasking cognitive deficits by standing up

Published at the end of November 2016, the linked article found that folks with orthostatic hypotension revealed more cognitive deficits on standing up than when measured sitting down or lying down.

Since most cognitive tests are administered while the subject is sitting or lying down,  cognitive difficulties faced in day to day living might be underestimated.

Participants with PD and OH were far more susceptible to posture-related impairment on several tests, including those that measured math skills, the ability to produce words easily, keeping information in mind while working on it, paying sufficient attention so that later memory is efficient and searching for items quickly and accurately.

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