Turritopsis dohrnii, source of image here.
Did you know that there are animals that are considered biologically immortal? These are animals that could live indefinitely unless an external event (depredation, disease, or drastic changes in their environment) eliminated them.
Of course, the apparent immortality of these species is conditioned by our own time-frame of observation. For example, the Ming clam had an estimated longevity of over 400 years when it was pulled from the ocean in 2006, at a depth of 88 m and about 10 km west of the southern tip of Grimsey Islet (40 km north of Iceland). The clam was named by scientists as Ming because it was born during the reign of the Ming dynasty in China and died because of the study to determine its age more accurately. Scientists rectified the age to be 507. Therefore, Ming was born around 1499, only a few years after Columbus discovered America and more than a...
What is life?...
Using ultrafast and ultrahigh field magnetic resonance imaging (fMRI), researchers at the Champalimaud Foundation and the University of Minho have found evidence of resonant waves in rat brain activity. This means that the brain (crane) seems to be a resonant chamber where distant brain areas show correlated activations due to collective wave modes [1].
Many theoretical works have proposed models based on standing waves to explain the macroscopic patterns observed [2-5], though the nature of such activations remains unclear. To delve deeper into this mechanism and understand how distant areas exhibit signal correlations, and how they are implicated in brain function, experimental evidence required a better temporal resolution of the fMRI spectras to show the spatial pattern oscillations and prove the hypothesis that these macroscopic patterns result from the distinct or independent transient oscillation...
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