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Social Memory

All articles tagged with #social memory

Decades-Long Social Memory in Apes: Louise Reunites with Sister After 26 Years
science1 day ago

Decades-Long Social Memory in Apes: Louise Reunites with Sister After 26 Years

A Johns Hopkins team used infrared eye-tracking with 26 apes across Europe and Japan and found that chimpanzees and bonobos gazed longer at former companions than strangers; one bonobo, Louise, now 46, recognized her sister Loretta after 26 years apart, the longest documented nonhuman social memory, suggesting apes remember bonds for much of their lifespans and that memory relates to positive past relationships, with welfare implications for housing and breeding decisions.

via The Times of India|
#bonobos#chimpanzees#memory
Brain circuit links social memory to fear, triggering aversion in mice
science-and-health1 month ago

Brain circuit links social memory to fear, triggering aversion in mice

University of Tokyo researchers identify a hippocampus–amygdala circuit that binds the memory of a familiar mouse to fear, causing avoidance after aggressive encounters; using optogenetics they could strengthen or erase this aversion, with the nucleus accumbens helping translate memory and fear into avoidance. While demonstrated in mice, the findings offer clues about how social memory and negative emotions interact, with potential relevance for anxiety and depression in humans.

via The Japan Times|
#amygdala#hippocampus#neuroscience
Caffeine Could Reverse Sleep-Deprivation Memory Deficits, Mouse Study Finds
science5 months ago

Caffeine Could Reverse Sleep-Deprivation Memory Deficits, Mouse Study Finds

Researchers in Singapore found that caffeine can both prevent and reverse social-memory deficits caused by sleep deprivation in mice, by acting on the CA2 region of the hippocampus and dampening adenosine signaling. Regular caffeine exposure before sleep loss preserved social recognition, and applying caffeine to brain tissue from sleep-deprived mice improved CA2 signaling. While the results illuminate a mechanism linking sleep, memory, and caffeine, they are in mice and must be tested in humans to assess relevance for dementia risk and cognitive health.

via ScienceAlert|
#caffeine#hippocampus#memory
UVA Researchers Find New Ways to Prevent Alzheimer’s Memory Loss of Loved Ones
health9 months ago

UVA Researchers Find New Ways to Prevent Alzheimer’s Memory Loss of Loved Ones

Research from the University of Virginia suggests that the breakdown of perineuronal nets around neurons in the brain contributes to social memory loss in Alzheimer's disease. In mice, preventing the degradation of these nets with MMP inhibitors preserved social memory, independent of amyloid pathology, indicating a new potential therapeutic target for the disease.

via Neuroscience News|
#alzheimers#brain-structure#health
Apes' Remarkable Memory: Recognizing Long-Lost Friends Decades Later
animal-behavior2 years ago

Apes' Remarkable Memory: Recognizing Long-Lost Friends Decades Later

New research has found that apes, including chimpanzees and bonobos, can recognize old friends they haven't seen for decades, marking the longest-lasting social memory documented outside of humans. The study used photographs of deceased or departed apes and found that the participating apes looked significantly longer at those they knew, regardless of the time that had passed since their last interaction. The research suggests that apes' social memory could extend beyond 26 years and may be comparable to humans. The study highlights the importance of conservation efforts and raises questions about the possibility of apes missing their loved ones. Future research will explore if apes can recognize former friends in their current appearance and investigate social memory in other primates.

via CNN|
#animal-behavior#animal-cognition#apes