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Neurociencia cognitiva

La base neural de las funciones cognitivas, que incluye la atención, la percepción, el lenguaje, la toma de decisiones, la función ejecutiva y el uso de la neuroimagen para estudiar la cognición humana

17 artículos

Artículos

Acute resistance exercise load modulates brain haemodynamics, working memory, and inhibitory performance

This study found that high-load resistance exercise (HRE) significantly improved executive functions like inhibition and working memory in healthy young adults, with effects lasting at least 45 minutes post-exercise. HRE was also associated with stronger and more sustained increases in right hemisphere oxygenated haemoglobin, indicating enhanced brain activity during cognitive tasks. Moderate-load resistance exercise (MRE) showed weaker and less consistent benefits.

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Neurociencia cognitiva 23 jun 2026, 14:11:36

Your Brain on ChatGPT: Accumulation of Cognitive Debt when Using an AI Assistant for Essay Writing Task△

This study utilized EEG and NLP to show that using LLMs for essay writing leads to significantly reduced brain activity related to memory, critical thinking, and creativity, compared to using search engines or no tools. Participants relying on LLMs also demonstrated lower essay ownership and a diminished ability to recall what they had just written, suggesting an accumulation of "cognitive debt." While LLMs provided initial efficiency, over multiple sessions, LLM users performed worse overall in neural, linguistic, and scoring metrics. A key limitation for the strongest claims is the smaller sample size for the fourth session.

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Neurociencia cognitiva 7 feb 2026, 19:24:18

NeuroChat: A Neuroadaptive AI Chatbot for Customizing Learning Experiences

This study introduces NeuroChat, an AI chatbot that uses real-time brainwave (EEG) data to adapt its responses, demonstrating significantly increased user engagement during learning tasks compared to a non-adaptive chatbot. However, despite higher engagement in a 20-minute session, the system showed no significant differences in short-term learning outcomes, highlighting challenges in translating engagement into measurable knowledge gains.

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Neurociencia cognitiva 11 oct 2025, 12:14:42

COVID-19 related cognitive, structural and functional brain changes among Italian adolescents and young adults: a multimodal longitudinal case-control study

This small longitudinal study of Italian adolescents and young adults found brain changes in those who had mild COVID-19, particularly in areas related to memory and smell. Specifically, functional connectivity differences and volume reduction were observed in the left hippocampus and amygdala, with changes in the amygdala potentially affecting spatial working memory. The study's small sample size limits the generalizability of the findings.

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Neurociencia cognitiva 22 sept 2025, 18:22:19

Integrated information and predictive processing theories of consciousness: An adversarial collaborative review

This review compares and contrasts three theories of consciousness—Integrated Information Theory, Neurorepresentationalism, and Active Inference—that are being directly tested against each other in a "research competition." The review focuses on what each theory attempts to explain, how they explain it, and the methods used to test them, highlighting key hypotheses under investigation.

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Neurociencia cognitiva 8 sept 2025, 17:11:16

A brain-wide map of neural activity during complex behaviour

This study used Neuropixels probes to record from over 600,000 neurons in mice performing a decision-making task. They found brain-wide neural correlates of various task elements, including visual stimuli, choices, feedback, and movement, with varying degrees of representation across brain regions. Some regions responded strongly to feedback and movement, while others showed stronger selectivity for visual stimuli or choices.

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Neurociencia cognitiva 3 sept 2025, 17:45:03

Damage to white matter networks resulting from small vessel disease and the effects on cognitive function

This study found that age-related white matter changes in the brain, particularly in the right hemisphere, are associated with decreased cognitive performance in older adults. Specifically, problems in certain white matter tracts were linked to lower scores on memory tests. However, the study used a brief cognitive test and didn't account for other contributing factors like BMI, anxiety, and depression.

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Neurociencia cognitiva 16 ago 2025, 13:41:18

TRIBE: TRImodal Brain Encoder for whole-brain fMRI response prediction

This study developed an AI model called TRIBE that can predict brain responses to videos using information from the video's images, audio, and transcript. The model performs better using all three information sources combined compared to using them individually and achieves good predictive accuracy even with out-of-distribution movies. The current study is limited by a relatively small sample size of four participants and the resolution of fMRI data used.

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Neurociencia cognitiva 11 ago 2025, 15:51:49

Brain-to-brain coupling during handholding is associated with pain reduction

This study found that hand-holding between romantic partners during a pain experiment increased brain-to-brain coupling in the alpha-mu frequency band, primarily between the central brain regions of the person experiencing pain and the right hemisphere of their partner. This coupling correlated with both pain reduction in the target and empathic accuracy in the observer. However, it's important to note that the study has limitations due to sample size and demographics, limited EEG spatial resolution, the correlational nature of the data, and the potential confound of the sound cue used in the experiment.

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Neurociencia cognitiva 1 ago 2025, 19:28:59

Cortical activity upon awakening from sleep reveals consistent spatio-temporal gradients across sleep stages in human EEG

This study used high-density EEG to show that the brain awakens in a consistent sequence, starting in frontal areas and progressing towards the back. Low-frequency EEG changes in NREM sleep originate in a central "hotspot," while subjective sleepiness upon awakening correlated with specific EEG patterns in NREM but not REM sleep.

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Neurociencia cognitiva 19 jul 2025, 16:53:33

Prevalence of Autism Spectrum Disorder Among Children Aged 8 Years — Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2016

The prevalence of autism spectrum disorder (ASD) among children aged 8 years in the US was 18.5 per 1,000 in 2016, higher than previous estimates. While no overall difference in prevalence was found between Black and White children, disparities persist in early evaluation and diagnosis for Black children, and Hispanic children continue to be identified less frequently.

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Neurociencia cognitiva 14 jul 2025, 10:35:43

Prevalence and Characteristics of Autism Spectrum Disorder Among Children Aged 8 Years — Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2020

The prevalence of autism spectrum disorder (ASD) among 8-year-old children in the U.S. was 27.6 per 1,000 (1 in 36) in 2020, higher than previous estimates. For the first time, ASD prevalence was lower among White children than other racial/ethnic groups, while Black children with ASD remain more likely to have a co-occurring intellectual disability.

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Neurociencia cognitiva 14 jul 2025, 10:35:40

Controlling for Participants' Viewing Distance in Large-Scale, Psychophysical Online Experiments Using a Virtual Chinrest

The study introduces the "Virtual Chinrest," a method for measuring viewing distance online using the blind spot. The method was validated in laboratory experiments and used in a large online study (N=1153) replicating previous findings on visual crowding, showing increased crowding with greater eccentricity and in individuals with dyslexia.

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Neurociencia cognitiva 14 jul 2025, 10:35:37