Can emotions revive memories in Alzheimer's patients?


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Can emotions revive memories in Alzheimer's patients?
Can emotions revive memories in Alzheimer's patients?

Recently, a video on social media moved us all. It featured Marta C. González, a former professional dancer now suffering from Alzheimer's disease. As she listened to Tchaikovsky's "Swan Lake," this former ballerina recalled, with precision, the choreography of her performance from over 50 years ago. This emotionally poignant scene also sheds light on the characteristics of Alzheimer's disease. "In the case of this dancer, it's procedural memory that endures for a long time," explains Dr. Sandra Benizri, a neurologist. She points out that there are different types of memory, and procedural memory operates on different circuits from other memory types.

"Emotions also play a significant role in preserving or triggering memories."

Individuals with Alzheimer's struggle to store new information and to retrieve already stored information. However, buried memories are not necessarily lost forever. While loved ones with Alzheimer's often seem to gradually detach from their recent and distant past, not all is lost. Many significant memories can remain dormant, waiting to be stimulated. "Several senses are very effective at bringing memories to the surface, especially smell and hearing. Music must have triggered this ballerina's old memories," notes the neurologist.

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She adds that emotions also play a significant role in preserving or triggering memories. The importance of an event lies not so much in the event itself but in the intensity of the accompanying emotion. It can be a great joy or strong emotion, as well as fear or other impactful, positive, or negative impressions. "For example, we tend to remember details related to a shock. We are more likely to recall significant elements because they were accompanied by a lot of emotions. Older memories are also easier to retain than recent events."

"We understand why nursing homes emphasize sensory workshops and Snoezelen rooms for Alzheimer's patients."

Thanks to Dr. Benizri's insights, we now understand why nursing homes place such emphasis on sensory workshops and Snoezelen rooms for Alzheimer's patients. In addition to providing well-being and relaxation to often restless individuals, these activities have a genuine function as memory triggers and stimulators, thanks to sensory stimulation. Long-buried memories can thus resurface.

"To prevent the disease, the social aspect is crucial."

It is important to remember that, to date, there is no cure for Alzheimer's disease. While we can slow it down, we cannot stop the degeneration once it has begun. Medications primarily aim to improve and slow down the symptoms. In addition to the characteristic memory loss in Alzheimer's disease, there are numerous other symptoms, including several psychiatric symptoms such as depression, agitation, and wandering related to disorientation and disrupted circadian rhythms of wakefulness and sleep.

Among the most common types of dementia are Alzheimer's disease and vascular dementia, which involves diffuse vascular damage to the blood vessels leading to the brain. "Currently, the focus is primarily on prevention and reducing risk factors. Physical activity and exercise are highly recommended. Brain oxygenation is fundamental. There is also a hereditary component to Alzheimer's disease, but it remains very low and mainly concerns cases of early-onset Alzheimer's."

If emotions and feelings stimulate the memory of Alzheimer's patients, social interactions and all they entail represent a key factor in reducing the risk of developing Alzheimer's disease. "To prevent the disease, the social aspect is crucial. Depression is a significant risk factor, as is a life of isolation. Social interaction is fundamental in preventing dementia. It keeps the brain active, and when a person is isolated, their brain is less stimulated," explains Dr. Benizri.

"Isolation among seniors increased in 2020."

This situation, which particularly affects seniors, is particularly alarming for several reasons, especially considering the importance of social bonds as a factor in reducing the risk of Alzheimer's disease, as mentioned by Dr. Benizri.

What are the consequences of isolation on our brain?

Furthermore, a study conducted by a team of German scientists and reported by Santé Log, the specialized website for healthcare professionals, analyzed the consequences of social distance on our brains. The study, conducted on zebrafish but with conclusions applicable to humans, identified a neuropeptide, Pth2, as an "indicator of socialization." "The study's lead author, Erin Schuman of the Max Planck Institute for Brain Research, describes this brain molecule 'as a thermometer of the presence of other people in the environment.' This neuropeptide appears to reverse the effects of isolation. The study found that the more isolated the fish were, the more Pth2 increased in their brains."

"Man is a social being," as Aristotle already told us. Even though health requirements must be respected, healthcare professionals agree that everything must be done to prevent the isolation of the elderly. Among other beneficial initiatives, it is worth noting that a new health protocol allows for visits to residents' rooms and outings from December 15 to January 3. (Le Monde). This relaxation of rules in nursing homes has been met with great relief by families and those concerned just before the holidays.

The Effects of Social Isolation on Cognitive Health

FactorEffect of IsolationBenefit of Social Interaction
Cognitive Function Accelerates memory decline and reduces mental stimulation. Keeps the brain active and helps delay cognitive decline.
Emotional Well-being Increases the risk of depression and anxiety. Boosts mood and reduces stress through companionship.
Risk of Alzheimer's Loneliness and depression are major risk factors. Engagement in conversations and activities lowers dementia risk.
Physical Health Higher likelihood of a sedentary lifestyle and poor health habits. Encourages movement, better sleep, and healthier behaviors.
Social Connection Weakened relationships and sense of detachment. Maintains relationships and strengthens emotional bonds.

Frequently Asked Questions (FAQ)

1. How do emotions help trigger memories in Alzheimer's patients?

Memories linked to strong emotions are often retained longer and can be reawakened through sensory or emotional experiences.

2. Why are sensory therapies used in Alzheimer's care?

Techniques such as music therapy, aromatherapy, and reminiscence therapy help trigger deep-seated memories and improve well-being.

3. How does social interaction reduce the risk of Alzheimer's?

Engaging in conversations and group activities keeps the brain active, reducing cognitive decline and preventing isolation-related depression.

4. What are Snoezelen rooms, and how do they help?

These are multi-sensory environments used in memory care to stimulate touch, sound, and light, reducing agitation and enhancing memory retrieval.

5. Why is isolation dangerous for seniors?

Isolation increases the risk of depression, accelerates memory decline, and reduces overall mental and physical health.

6. How does music therapy help Alzheimer's patients?

Familiar songs can evoke past emotions and memories, improving mood and reducing agitation in patients.

7. Can social isolation contribute to dementia?

Yes, studies show that loneliness and depression are significant risk factors for developing dementia.

8. What role does physical activity play in Alzheimer's prevention?

Exercise increases brain oxygenation, reduces inflammation, and helps maintain cognitive function.

9. Can someone with Alzheimer's still form new memories?

Memory formation becomes challenging, but repetition and emotional engagement can help retain some new information.

10. How can families support loved ones with Alzheimer's?

Encourage social interactions, engage in sensory activities, and maintain a structured routine to provide comfort and stimulation.

While the memory of Alzheimer's patients becomes increasingly affected as the disease progresses, the seat of emotions remains intact. Sociability, sensory stimulation, tenderness, and affection can make a significant difference in both managing the disease and preventing it.

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