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An ancient relative of modern seals—known as Potamotherium valletoni—that had an otter-like appearance and lived over 23 million years ago likely used its whiskers to forage for food and explore underwater environments, according to a new study in Communications Biology. The findings provide further insight into how ancient seals transitioned from life on land to life underwater.

Although modern seals live in and use their to locate food by sensing vibrations in the water, ancient seal relatives mostly lived on land or in freshwater environments. Some species used their forelimbs to explore their surroundings. Prior to this study, it was unclear when seals and their relatives began using their whiskers to forage.

Alexandra van der Geer and colleagues investigated the evolution of whisker-foraging behaviors in seals by comparing the brain structures of Potamotherium with those of six extinct and 31 living meat-eating mammals, including mustelids, bears, and seal relatives. Brain structures were inferred from casts taken from the inside of skulls.

Conference presentation of “Process Physics, Time and Consciousness: Nature as an internally meaningful, habit-establishing process.” As presented at the Whitehead Psychology Nexus Workshop Conference held in Fontareches, France, March 27-30th, 2015 (with some minor adjustments). For full published paper, see: https://tinyurl.com/yc9r6kys (date of publication: October 18, 2017).

Abstract:

Process Physics, Time and Consciousness: Nature as an internally meaningful, habit-establishing process.

Author: Jeroen B. J. van Dijk, Eindhoven, The Netherlands.

A recent study used special eye-tracking technology to investigate how people look at each other’s eyes and faces during conversations. The researchers, who published their results in Scientific Reports, found that people who exhibited more direct eye-to-eye contact during their conversation tended to also be better at following the direction of another’s gaze (they were better at understanding where the other person was looking). The research provides unique insights into non-verbal communication.

Much of human social communication occurs nonverbally, and eye contact plays a crucial role in allowing individuals to convey and interpret information such as attention, mental states, intentions, and emotions. Eye contact is not only passively received but also reciprocated through mutual looks.

The researchers wanted to examine the frequency and types of mutual looking behaviors, such as direct eye-to-eye contact and other gaze interactions involving different parts of the face. They were also interested in understanding how the mutual looking behaviors observed during interactions might influence subsequent gaze-following behavior.

People don’t go into Michael Angelo’s field to be cool.

“Pathology is like the chess club of medicine,” said Angelo MD, PhD, an assistant professor of pathology at the Stanford School of Medicine. You don’t join for status — you join because you love it, he said.

Still, Angelo got the idea for a pretty cool technology when he was a young pathology resident studying the origins and trajectory of disease.

Neuroscientists today report the first results from experimental tests designed to explore the idea that “forgetting” might not be a bad thing, and that it may represent a form of learning—and outline results that support their core idea.

Last year the neuroscientists behind the new theory suggested that changes in our ability to access specific memories are based on environmental feedback and predictability. And that rather than being a bug, may be a functional feature of the brain, allowing it to interact dynamically with a dynamic environment.

In a changing world like the one we and many other organisms live in, forgetting some memories would be beneficial, they reasoned, as this can lead to more flexible behavior and better decision-making. If memories were gained in circumstances that are not wholly relevant to the current environment, forgetting them could be a positive change that improves our well-being.