While patients with Alzheimer’s might not remember when their loved ones visit, it has a profound effect on how they feel, a new study finds.

The study showed both happy and sad video clips lasting around 20 minutes to people with Alzheimer’s disease and observed their emotional states (Guzmán-Vélez et al., 2014).

They did the same for a group of healthy adults.

Five minutes afterwards, all the participants were given a memory test to see if they could remember the video they had just seen.

As you’d expect, Alzheimer’s patients remembered significantly less about the clips they’d just seen than the healthy group

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