The short answer is: quite possibly, yes. A growing body of research suggests that people who appear unconscious and unresponsive in their final hours may still have some degree of awareness, particularly the ability to hear. The brain does not shut off like a light switch. Instead, it winds down gradually, and certain functions, especially hearing, appear to persist much longer than outward signs would suggest.
If you’re asking this question, you’re likely sitting with someone you love or recently lost. What the science tells us should be reassuring: there is real evidence that your presence and your words may register, even when there’s no visible response.
Hearing Likely Persists Until the End
A landmark study published in Scientific Reports tested brain responses to sound in hospice patients who were completely unresponsive and actively dying. Using EEG monitoring, researchers played sequences of tones and measured whether the brain reacted to unexpected changes in those patterns. All five unresponsive, actively dying patients showed brain signatures of detecting sound changes. Their brains were processing what they heard, even though they gave no outward sign of it.
Some of these patients showed only basic sound detection, while others displayed more complex processing. Two of the five (40%) showed brain responses associated with higher-level pattern recognition, the kind of processing that involves attention and memory. This suggests that for some people, the brain isn’t just passively registering noise in the final hours. It may be actively making sense of what it hears.
This aligns with what hospice workers have observed for decades: that hearing seems to be the last sense to fade. The science now backs that up with measurable brain data.
Awareness During Clinical Death
Research from NYU Langone’s Parnia Lab has pushed this question even further, studying people who were clinically dead during cardiac arrest and then resuscitated. Among survivors, 39 percent reported some perception of awareness during a period when they showed no clinical signs of consciousness. Ten percent described profound or transformative experiences. Some patients reported conscious awareness many minutes after their heart stopped, a point when the brain has typically lost measurable function.
Separately, a study published in JAMA found that two of four comatose patients showed a dramatic surge in high-frequency brain waves after life support was removed. These gamma waves appeared in a region of the brain associated with conscious experience, mirroring patterns seen in people who are awake or dreaming. Notably, these signals were not present before life support was withdrawn. Something in the dying process itself appeared to trigger them.
No one can say with certainty what these surges mean in terms of subjective experience. But the brain, even in its final moments, is more active than most people assume.
Terminal Lucidity: Unexpected Clarity Before Death
One of the most striking phenomena in end-of-life care is what researchers call paradoxical or terminal lucidity. This is when a person who has been deeply confused or completely unresponsive, sometimes for months or years due to conditions like advanced dementia, suddenly becomes coherent. They recognize family members, hold conversations, and seem fully present. These episodes typically occur very close to death.
A scoping review published in the Journal of Alzheimer’s Disease found that episodes of lucidity were observed in roughly every second resident in a sample of people living with severe dementia in care facilities. That’s a remarkably high number for something many families and even clinicians don’t expect. The mechanisms behind it remain poorly understood. One hypothesis involves a sudden release of brain chemicals that temporarily restores arousal and attention, even in a brain with extensive damage. Conventional theories about where and how memory is stored may not fully explain it.
For families, terminal lucidity can be both a gift and a source of confusion. It doesn’t usually signal recovery. But it does suggest that the capacity for awareness can exist in the brain long after it seems to have disappeared.
Can Dying People Feel Pain?
This is one of the most important practical questions for anyone caring for a dying loved one. The evidence is nuanced. Neuroimaging research shows that pain processing increases with the level of consciousness: patients who are minimally conscious show significantly more pain-related brain activity than those in a fully unresponsive state. But the boundary is not clean.
Some patients who appear entirely unresponsive still show activation in brain areas responsible for the emotional and cognitive dimensions of pain, not just the basic sensory detection. This goes beyond simple reflexes. When an unresponsive person pulls away from a painful stimulus, that could be a spinal reflex. But when brain imaging shows activity in regions involved in processing the unpleasantness of pain, it raises the possibility that some experience of suffering is occurring.
This is why pain management remains a priority in end-of-life care even for patients who cannot communicate. The absence of a grimace or a cry does not guarantee the absence of discomfort.
How Medications Affect Awareness
Many dying patients receive sedatives or pain medications that influence consciousness. In palliative care, the goal is usually “conscious sedation,” keeping a person comfortable enough to avoid distress while preserving as much ability to communicate as possible. A seven-year analysis of palliative sedation practices found that 50 percent of sedated patients retained the ability to communicate in some form, whether that meant asking for help, answering questions about comfort, or cooperating with caregivers.
The typical approach involves slowly adjusting medication levels, often reducing doses during the day so the person can interact with loved ones and increasing them at night for restful sleep. Sedation in palliative care exists on a spectrum. Light sedation may not meaningfully reduce awareness at all. Deeper sedation, used for severe symptoms that can’t be controlled any other way, does progressively limit consciousness, but even then, the line between unresponsive and unaware is not always where it appears to be.
How Awareness Fades in the Final Days
The decline in consciousness during dying is typically gradual and follows a recognizable pattern over days. It begins with increasing fatigue, longer periods of sleep, and reduced interest in food or conversation. Cognitive function narrows. A person may become confused about time and place, then stop initiating communication, then stop responding to it.
In the final hours, more specific physical signs appear. A study of patients with advanced cancer identified a cluster of neurological changes that were highly predictive of death within three days: pupils becoming non-reactive to light, decreased response to voices, decreased response to visual cues, inability to fully close the eyelids, and drooping of facial muscles. These signs reflect the progressive shutdown of brain circuits controlling both awareness and motor function.
But “progressive” is the key word. These changes don’t happen all at once, and the fact that some brain functions (like auditory processing) persist after others have faded means there is likely a window, possibly a long one, where a person who looks completely unresponsive still has some inner experience of the world around them.
What This Means if You’re at the Bedside
The practical takeaway from all of this research is simple: assume they can hear you. Talk to them. Tell them what you want them to know. Physical touch, a hand held, hair stroked, may also register, though the evidence for auditory processing is the strongest.
Be mindful of what’s said in the room. If hearing persists, then conversations about prognosis, logistics, or family disagreements may be perceived. Many palliative care teams advise families to keep the environment calm and to speak directly to the person, not just about them.
The science does not tell us exactly what dying feels like from the inside. But it consistently points in one direction: the dying brain is more aware than it looks, for longer than most people expect. The people who study this most closely tend to come away with the same conclusion. When someone you love is dying, your presence matters, and they may know you’re there.