Throughout the day, our normal human brain performs a wide range of activities and functions. The human brain operating temperature changes throughout the day. According to new research, the normal temperature of the human brain swings significantly more than previously thought, which could indicate good brain function.
According to the study, certain areas of the deep brain can reach temperatures of up to 40 degrees Celsius, though this varies depending on gender, time of day, and other factors. In comparison, the average oral temperature in humans is less than 37 degrees Celsius. According to researchers, this is not an indication of a malfunction, but rather evidence that the brain is functioning normally. Human brain operating temperature studies have previously used data from brain-injured patients in intensive care, where direct brain monitoring is commonly required.
Researchers were recently able to detect brain temperature in healthy people using a brain scanning tool called magnetic resonance spectroscopy (MRS). However, MRS had not previously been used to investigate how human brain operating temperature varies throughout the day, or how one’s ‘body clock’ influences this.
The new study is the first to create a four-dimensional map of healthy human brain temperature. This chart disproves a number of previously held beliefs by displaying how much normal human brain temperature changes by brain area, age, gender, and time of day.
The researchers also examined data from traumatic brain injury patients and discovered that the presence of daily human brain operating temperature cycles is strongly linked to survival. These findings could help with the diagnosis, prognosis, and treatment of brain injuries.
The study’s findings were published in the journal Brain.
According to the report, the researchers “recruited 40 healthy adults (20 males, 20 females, 20–40 years) for brain thermometry using magnetic resonance spectroscopy.” Participants were scanned in the morning, afternoon, and late evening on a single day.
According to the report, healthy participants’ brain temperatures ranged from 36.1 degrees Celsius to 40.9 degrees Celsius.
Female brains were 0.4 degrees Celsius warmer than male brains on average. Because most females were scanned during the post-ovulation phase of their cycle, their brain temperature was about 0.4 degrees Celsius higher than in the pre-ovulation phase. The menstrual cycle was most likely to blame for this disparity.
The most striking discovery, according to Dr. John O’Neill, Group Leader at the MRC Laboratory for Molecular Biology, is that the healthy human brain operating temperature that would be classified as fever elsewhere in the body. Such high temperatures have previously been measured in people with brain injuries, but they were thought to be caused by the injury. The researchers discovered that the temperature of the brain decreases before sleep and rises during the day. There is evidence to suggest that daily variation is linked to long-term brain health, which the researchers intend to investigate further.
The researchers now hope that the 4D brain temperature map can be used as a guide for what a healthy brain should look like. To be truly useful, however, much more data from a much larger group of people is required.