Dr. Leo Foster

🧠 Neuroscientist | Cognitive Explorer | Critical Thinking Advocate.
Decoding the brain’s complexities. Research summaries & thought-provoking debates.

[Sarah Mitchell @sarahbizhack]

Great marketing is all about asking the right questions. Tools like @ProblemSolvae helps marketers analyze data, challenge assumptions, and uncover new angles for better decision-making.
I wanted to share this with everyone.

[Oliver Tran @psychwizxp]

Your brain is not a storage unit—it’s a pattern recognition machine. Train it wisely with spaced repetition, active recall, and strategic questioning. The right brain hacks turn forgetting into mastery.
So how do you train your brain?

[Dr. Mark Guttberg @brainymarkG]

The future of innovation isn’t just about new technology—it’s about how we question existing systems. The right framework drives breakthroughs in AI, psychology, and research. Structured inquiry isn’t optional; it’s essential.

[Dr. Fatima Khan @cortexxplorer]

Which ones comes earliest?

Advanced AGI
Quantum Computing
Brain-Computer Interfaces
Nanotechnology
Autonomous Systems
Genetic Engineering
Fusion Power
Immersive VR/AR
Space Colonization
Ethical AI Governance

What do you think?

[Kevin Liu @CognitiveBiz]

Imagine this: by 2040, human intelligence might merge with quantum bio-networks, letting us think in parallel dimensions, solving problems we can’t even fathom now—like rewriting time’s flow. Wild, right? #FutureIntelligence #MindBlown

[Psychology Today @PsychToday]

Understanding the neuroscience behind how radical ideas develop could help us treat or even prevent them. @TahirRahmanMD explains how.
https://t.co/BOtrXHl1Fd

[Shahriyar Gourgi @ShahriyarGourgi]

Truly understanding the brain requires a set of conditions we’re unlikely to meet: that knowledge about the brain is finite, and that we have both access to that knowledge and the means to understand it.

https://t.co/tEePq7Zo47

[Psychology Today @PsychToday]

Understanding the neuroscience behind how radical ideas develop could help us treat or even prevent them. @TahirRahmanMD explains how.
https://t.co/BOtrXHl1Fd

[Mario Nawfal @MarioNawfal]

🚨 CONSCIOUS AWARENESS CHANGES HOW THE BRAIN HANDLES CONFLICTING INFORMATION

A new study in Journal of Experimental Psychology reveals that when people are unaware of a visual cue, their brain processes it separately from expectations.

But once they become aware, these processes merge, fundamentally altering perception.

Using experiments with visual suppression techniques, researchers found that conscious perception enables overlapping neural networks to integrate sensory input and decision-driven expectations.

This supports the global neuronal workspace theory, which suggests consciousness emerges from integrating top-down and bottom-up processing.

The findings may have implications for neuroscience, cognitive therapy, and even artificial intelligence, offering deeper insights into how awareness shapes decision-making and response to stimuli.

Source: PsyPost, Nature

[Aaron Kucyi @neuroperson]

Our new paper: We used human intracranial recordings to confirm the unique functional profiles of major "intrinsic" brain networks (default mode, dorsal attention, salience) and revealed their dynamic relationships with behavioral fluctuations https://t.co/pUWzzG0U5U

[Owen Gregorian @OwenGregorian]

Conscious awareness changes how the brain processes conflicting information | Mane Kara-Yakoubian, PsyPost

A study published in Journal of Experimental Psychology: General found that when people are unaware of a visual cue, their brain processes it separately from their expectations, but when they become aware of it, these two processes start to interact.

Understanding how conscious awareness influences perception is a central question in neuroscience and psychology. The global neuronal workspace theory suggests that conscious perception emerges when top-down (TD) decision-driven processing and bottom-up (BU) sensory-driven processing integrate within overlapping neural networks.

Prior research has established that both objective sensory information and subjective interpretation influence behavior, but how these streams interact depending on conscious awareness is unclear.

Research using priming paradigms has demonstrated that subliminal primes (stimuli not consciously perceived) can still influence responses to subsequent targets. However, whether the neural mechanisms of TD and BU processing remain separate or integrate during different levels of awareness has not been thoroughly tested.

In a new study, Ze-Fan Zheng and colleagues investigated this question by designing two experiments to determine whether TD and BU processing remain independent in unconscious conditions or merge when stimuli are consciously perceived.

The researchers utilized two experiments using variations of the Stroop priming paradigm. The first experiment involved 31 participants. This study used a continuous flash suppression (CFS) technique to render the prime word—either the Chinese character for “yellow” or “blue”—invisible by presenting it to one eye while rapidly changing visual noise (Mondrian patterns) was shown to the other.

This technique ensured that the prime remained undetected in certain conditions while its visibility varied across different trials. Following prime exposure, participants viewed a color target (either yellow or blue) and indicated its color. They then attempted to identify the prime word in a two-alternative forced-choice (2AFC) discrimination task. To manipulate awareness systematically, the researchers adjusted the prime’s contrast and categorized trials based on how well participants could consciously perceive it.

The second experiment reanalyzed data from a previous study (Sand & Nilsson, 2017) that used backward masking to manipulate prime visibility. Here, 67 participants were exposed to an English color word (either “RED” or “BLUE”) for six milliseconds, followed by a visual mask that prevented conscious perception in some trials. The target stimulus (a colored frame in either red or blue) appeared immediately afterward, requiring participants to identify its color.

Unlike the first experiment where prime contrast varied, in this experiment, the physical characteristics of the prime remained unchanged across trials. This allowed researchers to assess subjective visibility independently of stimulus strength. Participants reported their perceived visibility of the prime using a three-level scale (“no percept,” “unclear percept,” or “clear percept”) and attempted to identify the prime word in a 2AFC task. Researchers categorized trials as either “invisible” or “visible” based on subjective ratings.

The findings were compelling. In the first experiment, when participants were unable to consciously perceive the prime (as determined by low prime discrimination accuracy), TD and BU congruency effects influenced reaction times independently, meaning the two types of processing operated in separate neural systems. However, as prime visibility increased, an interaction between TD and BU effects emerged, indicating the two processes started to merge when the prime was consciously perceived.

Specifically, reaction times in conditions where both TD and BU representations were incongruent showed a reduced interference effect. This aligns with the hypothesis that conscious awareness enables overlapping neural networks to integrate these representations. The transition from independent to interactive effects across different visibility levels provides behavioral evidence supporting the global neuronal workspace theory, which predicts that conscious perception results from integrating sensory and decision-driven processing in a shared neural workspace.

The second experiment replicated these findings using a different paradigm, confirming that TD and BU processes interact only when the prime is consciously perceived. When participants reported no percept of the prime, TD and BU effects remained separate, with no significant interaction. However, when participants subjectively reported seeing the prime—even with unchanged physical characteristics—TD and BU effects combined non-independently, mirroring the pattern in the first experiment.

Results also indicated that BU-driven processing did not significantly influence reaction times when the prime was entirely suppressed. This suggests unconscious perception may not always generate measurable behavioral effects in certain masking conditions.

By demonstrating that TD and BU interactions depend on conscious awareness across two different experimental approaches, this research provides evidence that merging these processes is a hallmark of conscious perception rather than a byproduct of stimulus strength or task design.

Read more:

https://t.co/5iTnpMk7JC

[Ali Abdaal @AliAbdaal]

Can you rewire your brain?🧠

This is the most science-packed episode of Deep Dive yet🔥

I sat down with neuroscientist Dr Tara Swart to find out what we can learn from neuroplasticity. For ways to improve your brain performance + resilience, listen or watch on the links below.

[Neuroscience News @NeuroscienceNew]

How the Brain Learns and Integrates Prior Knowledge with New Information

Our brain organizes knowledge by linking basic sensory details to complex concepts, shaping our understanding of the world.

A recent study reveals that visual experience plays a key role in refining brain connections, allowing us to better integrate context and recognize patterns.

Researchers found that these feedback connections in the brain become more specialized with experience, enhancing our ability to process and interpret new information.

Understanding this process may provide insights into neurological conditions where perception is altered, such as autism and schizophrenia.

1/3

[Kevin Mitchell @WiringTheBrain]

A landscape of consciousness: Toward a taxonomy of explanations and implications https://t.co/34OREGVLcr - A comprehensive overview of theories by Robert Kuhn, @CloserToTruth - it's no wonder we can't agree!

[Massimo @Rainmaker1973]

Cognitive dissonance, explained by a neuroscientist.

[📹 drrachelbarr]
https://t.co/gprgc1jX7n

[Gifted. @wggifted]

“The Neuroscience of Uncertainty” — Your Brain on Uncertainty: The Neuroscience of Navigating the Unknown https://t.co/S26VqNhbU3

[Denyse O'Leary @itsdesign]

Looking for consciousness in all the wrong places – neurosurgeon Michael Egnor

Reductionism is nonsense, and “consciousness” is not nestled in clusters of neurons [Egnor's comments on the hippocampi are especially worth noting.]

https://t.co/nAfF5Vo41t

The higher human ability to think abstractly — to reason and will freely — are not physical abilities and do not come from the brain.

[Critical Thinking 101 @critica18495985]

🚨Do not ignore this🚨

👀Read this very carefully👀

https://t.co/sLQvX0xcpK