For the World Sleep Day Let's explore this year's theme: "Sleep well, live better." At cereneo , we understand that sleep is not just a period of inactivity; it is a complex neurological process that is essential for recovery, cognitive function, and emotional resilience.
To learn more about the science of sleep, we spoke with our neuropsychologist and somnologist Marcel about how we can optimize our days to make our nights more restful.
This is a crucial question, because sleep is the foundation of our performance while awake. From a clinical perspective, sleep focuses on three "crucial factors": Sufficient duration, high quality and consistent time management.
However, the most important shift in perspective is this: Healthy sleep does not begin at night, but the moment you wake up.
To stabilize your internal clock and promote deep, restful sleep, sleep medicine points to some scientifically sound principles that everyone can implement:
It is a common misconception that sleep disorders are merely "side effects" of a neurological disease. In fact, they are often a central component of the disease itself. Whether it's Stroke , Parkinson's disease, or Traumatic Brain Injury (TBI) , the brain's ability to regulate sleep is frequently impaired.
We typically see five key challenges in our patients:
insomniaDifficulties falling asleep or staying asleep, often caused by changes in brain chemistry, the daily routine in hospital, or the emotional stress of Recovery .
Disrupted sleep-wake cycleDamage to the brain's internal clock (the SCN) can cause patients to sleep excessively during the day, which unfortunately impairs their sleep at night.
Respiratory diseasesConditions like sleep apnea occur surprisingly frequently after a Stroke . If left untreated, they can impair cognitive recovery and increase cardiovascular risk.
Restless limbsInvoluntary movements can prevent a patient from reaching a relaxed state, leading to fragmented sleep of which the patient may not be fully aware.
Excessive daytime sleepinessIt is often a complex mixture of the Brain Injury itself, the effects of the medication, and poor sleep quality at night.
We consider sleep a pillar of Neurorehabilitation , not a secondary matter. Our approach is systematic.
It begins with a thorough screening process, using targeted questionnaires and precise measurements, such as pulse oximetry, to identify potential warning signs early on. If these initial findings point to a deeper underlying problem, we conduct a more detailed examination of the night using polysomnography. This allows us to observe precisely what happens in the patient's brain and body during sleep.
Once we have this data, we pursue a two-pronged approach. We use cognitive behavioral therapy (CBT) to help patients change dysfunctional thought patterns and attitudes that may be affecting their sleep. At the same time, we optimize their physical condition Quiet environment to ensure that it actively promotes Recovery .
We witness daily how this integrated care transforms the lives of many people. I recall a case where a Stroke patient believed he slept through the night but was completely exhausted during his Therapy Session during the day. After a sleep study, we discovered he was suffering from severe sleep apnea. As soon as he began CPAP therapy, his alertness not only improved—it fundamentally changed. Suddenly, he had the necessary physical and mental energy to fully engage in his Rehabilitation training.
We need to adjust sleep schedules to allow for optimal participation in daytime Rehabilitation . At the same time, we recognize that recommendations must be realistic and culturally sensitive. Adjusting the sleep-wake rhythm developed over a lifetime takes time. We use aids such as melatonin and therapy lamps to accelerate or delay these rhythms. However, our approach is always based on three fundamental questions:
We don't strive for perfection, but for stability. For example, I treated a patient who absolutely insisted on watching the late-night news because it was a lifelong habit. Instead of forbidding him from doing so—which would likely have failed—we adjusted his screen brightness, slightly shifted his wake-up time, and optimized his light exposure the following morning.
Technology is a valuable tool in our clinical practice, but it must be used judiciously. Data without expert interpretation is often misleading. A German study even showed that these devices are only moderately reliable in detecting sleep disorders and frequently trigger false alarms. At cereneo , we advise our patients to view technology as a guide, not as a decision-making aid. It cannot replace the behavioral consistency that forms the basis for restful sleep.
This statement hits the nail on the head. In our daily clinical practice, we see that the most important lesson regarding sleep is regularity. Patients often find it difficult to understand that trying to fall asleep more forcefully usually only makes the situation worse. Instead, a stable daily rhythm actually leads to restful sleep.
We focus on a few key habits that have a significant impact on daily life. These include using natural or artificial light within 30 minutes of waking up and maintaining a regular wake-up time, even after a restless night. During the day, we advise our patients to avoid heavy evening meals and late-night caffeine consumption. Although naps are often necessary in Neurorehabilitation , we try to limit them to under 30 minutes to avoid disrupting sleep.
We consistently observe that as patients sleep more, their mood stabilizes, their attention improves, and their memory becomes more robust. Their physical stamina and motivation increase, because sleep is not passive recovery but rather active brain regeneration. Particularly after a neurological injury, sleep has a therapeutic effect, providing the brain with the necessary biological conditions to reorganize, heal, and adapt.
At cereneo we see sleep as an essential partner on the path to independence and health, whether you are recovering from a neurological event or simply want to improve your everyday well-being.
