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#cognitivefunction

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Stephanie

Are our brains being rewired by the constant flood of digital input? Between dopamine loops on social media, non-stop notifications, and relentless info streams, ADHD-like symptoms—poor focus, impulsivity, and emotional reactivity—are everywhere. It makes me wonder: are our devices fundamentally reshaping cognitive function, or can we adapt to this pace without compromising mental health? Personally, I’m starting to think our brains might be reaching a limit.

From a neuroscience perspective, our brains evolved for a very different reality—a slow, steady flow of sensory information that allowed for deep focus and mental rest. Today, though, we’re in a state of near-constant stimulation, with each notification or social media update triggering dopamine hits that reinforce the behaviour, creating a loop that erodes our attention span and even our self-regulation.

Then add in chronic stress, which overstimulates the amygdala, our brain’s emotional centre. This can impair the prefrontal cortex—the area responsible for planning, rational thought, and regulating emotions. Over time, this rewiring makes people more emotionally reactive, less able to plan ahead, and more impulsive in everyday situations.

Even factors like poor diet and lack of exercise play into this, destabilising the neurotransmitter and blood sugar levels we need for focus, memory, and emotional stability. It all leads to the patterns of stress, poor focus, and cognitive overload that so many seem to be facing today.

Can our brains adapt, or do we need to rethink how we’re using technology? What are your thoughts on the impact of our digital lives on mental health?

#Neuroscience#MentalHealth#DigitalOverload
Public
Dennis A

#NightOwls #CognitiveFunction
Yeah! Ha ha! We are smarter. 🥱😴💤🛌

Night owls’ cognitive function ‘superior’ to early risers, study suggests | Neuroscience | The Guardian

"Research on 26,000 people found those who stay up late scored better on intelligence, reasoning and memory tests."
theguardian.com/science/articl

The Guardian · Night owls’ cognitive function ‘superior’ to early risers, study suggestsBy Anna Bawden
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Denise G

The research suggests that while #caffeine can be a useful tool for enhancing alertness in the short term, excessive regular intake may reduce its effectiveness and potentially impair #cognitivefunction during periods of #sleepdeprivation. These findings have significant implications, particularly for professions that often involve #sleep deprivation, prompting a reevaluation of caffeine consumption habits and their long-term effects on our brains and attention.

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CDCastillo

@Lost_Paradise Long-term cannabis consumption, however, is related to a decline in cognitive function and to volume loss in the part of the brain where memories are stored…

#Cannabis #CognitiveFunction #HippocampalVolume #Dementia

ajp.psychiatryonline.org/doi/f

American Journal of PsychiatryLong-Term Cannabis Use and Cognitive Reserves and Hippocampal Volume in MidlifeObjective: Cannabis use is increasing among midlife and older adults. This study tested the hypotheses that long-term cannabis use is associated with cognitive deficits and smaller hippocampal volume in midlife, which is important because midlife cognitive deficits and smaller hippocampal volume are risk factors for dementia. Methods: Participants are members of a representative cohort of 1,037 individuals born in Dunedin, New Zealand, in 1972–1973 and followed to age 45, with 94% retention. Cannabis use and dependence were assessed at ages 18, 21, 26, 32, 38, and 45. IQ was assessed at ages 7, 9, 11, and 45. Specific neuropsychological functions and hippocampal volume were assessed at age 45. Results: Long-term cannabis users showed IQ decline from childhood to midlife (mean=−5.5 IQ points), poorer learning and processing speed relative to their childhood IQ, and informant-reported memory and attention problems. These deficits were specific to long-term cannabis users because they were either not present or were smaller among long-term tobacco users, long-term alcohol users, midlife recreational cannabis users, and cannabis quitters. Cognitive deficits among long-term cannabis users could not be explained by persistent tobacco, alcohol, or other illicit drug use, childhood socioeconomic status, low childhood self-control, or family history of substance dependence. Long-term cannabis users showed smaller hippocampal volume, but smaller hippocampal volume did not statistically mediate cannabis-related cognitive deficits. Conclusions: Long-term cannabis users showed cognitive deficits and smaller hippocampal volume in midlife. Research is needed to ascertain whether long-term cannabis users show elevated rates of dementia in later life.
Public
Javier Díaz-Nido

Exercise and the Brain: The Neuroscience of Fitness Explored

Regular exercise profoundly impacts our brain and nervous system.
Exercise stimulates neurogenesis – the creation of new neurons – primarily in the hippocampus, influencing memory and learning while increasing key mood-regulating neurotransmitters. It also enhances brain plasticity, essential for recovery from injury and aging, and improves cognitive functions such as attention and memory.
#Biomedicine #Neuroscience #Brain #Neurology #BrainPlasticity #Neurogenesis #Hippocampus #Learning #Memory #CognitiveFunction #Exercise #Fitness

neurosciencenews.com/fitness-n

Neuroscience NewsExercise and the Brain: The Neuroscience of Fitness Explored - Neuroscience NewsNeuroscience News provides research news for neuroscience, neurology, psychology, AI, brain science, mental health, robotics and cognitive sciences.
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