Astrocytes, non-neuronal brain cells, have been shown to work alongside neurons to store and recall memories, reshaping our understanding of memory mechanisms. Researchers found that specific astrocytes express the c-Fos gene during memory formation, influencing neuron communication to store memories.

A new study shows that using reminders can counteract age-related declines in memory, especially for tasks that require prospective memory, such as taking medication. Researchers found that reminders help both younger and older adults improve memory performance under high cognitive load.

Fear memories initially form broad associations, but over time, they shift to become episodic memories tied to specific timelines. This process involves the hippocampus early on, with the dorsolateral prefrontal cortex integrating the event sequence later.

Researchers have discovered that Heliconius butterflies, known for feeding on both nectar and pollen, show mosaic brain evolution with specialized neural expansions linked to enhanced learning and memory abilities. This expansion occurs in specific brain structures called mushroom bodies, which are key for long-term visual memory and spatial learning.

New research uncovers that the cerebellum is critical for long-term motor skill memory formation, distinguishing it from short-term memory systems. Patients with cerebellar damage showed normal performance on motor tasks over short intervals but were impaired with longer gaps, linking the cerebellum directly to long-term sensorimotor memory. These findings resolve inconsistencies in prior studies and highlight the importance of time intervals in understanding motor memory degradation in cerebellar degeneration.

Research reveals that dogs’ and humans’ brain activity can synchronize when they gaze into each other’s eyes. Known as neural coupling, this phenomenon has been seen in interactions within species, but observing it between different species highlights the unique human-dog bond.

New research suggests that reflecting on a parent in therapy can subtly alter how a person recalls feelings from childhood, even if the question is neutral. This process, known as reappraisal, may lead individuals to adjust their emotions or perceptions toward a parent, with potential long-term effects on family dynamics. In one experiment, participants were asked to remember positive or negative attributes of their mothers, which notably impacted their current and past feelings.

A recent study reveals that specific brain cells respond not only to smells but also to images and written words related to those scents, providing deeper insight into human odor perception. Researchers found that neurons in the olfactory cortex and other brain regions, like the hippocampus and amygdala, distinguish between different smells and associate them with visual cues. This research, using data from epilepsy patients, bridges a gap between animal and human studies on olfactory processing.

Digital technology has transformed how we document and recall life experiences, from capturing every moment with photos to tracking our health data on smart devices. This increased density of digital records offers potential benefits, like enhancing memory for personal events or supporting those with memory impairments. However, it also raises concerns, such as privacy risks and the potential for manipulation through technologies like deepfakes. Researchers emphasize the need for further study to understand both the opportunities and risks posed by digital memory aids as they become more integral to how we remember.

Healthy adults who contracted COVID-19 had subtle but measurable declines in memory and cognitive performance lasting up to a year. These differences were found through sensitive testing under controlled conditions, though all scores remained within normal ranges, and none of the participants reported lasting cognitive symptoms.