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Category: evolution

Recent Scientific Evidence that Supports Nichols’s Lost Primal Eye Theory of Mind I. Core Premise: The Evolutionary Shift

The Phantom Organ and The “Hard Problem” — I apply MVT to solve David Chalmers’s “Hard Problem” of consciousness-the question of why physical brain processes are accompanied by subjective feelings (qualia).

Nichols’s theory posits that self-referential consciousness and abstract thought in many modern animals are the evolutionary result of the loss of a physical sensory organ: the parietal/pineal eye (the “primal eye”). Nichols maps this transition across three brain states in vertebrate evolution: The E2 State (Finite-State): Early fish, amphibians, and ancestral reptiles (as well as modern “living fossils” like the Tuatara) possessed a functional, light-sensitive median eye on top of their skulls, connected to the pineal gland. This organ directly controlled thermoregulation, circadian rhythms, and basic predator detection in coldblooded (ectothermic) animals. Their brains were “hard-wired,” responding directly to environmental stimuli. The E1 State (Infinite-State): As mammals and birds evolved warmbloodedness (endothermy), external temperature sensing became redundant, and advanced lateral eyes took over visual duties. The primal eye atrophied, leaving behind only the internal pineal gland. Freed from the direct “lock-step” control of the sun, the brain became plastic and self-organising (infinite-state). The E0 State: Some lineages, like certain dinosaurs and modern crocodilians, lost both the median eye and the pineal gland entirely. II. The Phantom Organ and The “Hard Problem” Nichols applies MVT to solve David Chalmers’s “Hard Problem” of consciousness-the question of why physical brain processes are accompanied by subjective feelings (qualia). The Virtual Sensor: Just as an amputee can experience a “phantom limb” because the neural matrix still expects the arm, the E1 mammalian brain experiences a “phantom eye”. The brain was built over millions of years to process a central stream of generic sensory data from the primal eye. Centrally Evoked Mentation: When the physical eye retreated, it left an internal sensory void. The brain compensated by simulating the presence of this lost hub to unscramble data from the other senses. This virtual simulation is the seat of the subjective “I”. III. The Origins of REM Sleep and Dreaming Nichols heavily critiques philosophers like Owen Flanagan, who argue that dreams are useless evolutionary “spandrels” (biological noise). Baseline Architecture: In MVT, Rapid Eye Movement (REM) sleep is the baseline functional state of the new E1 architecture. Because the physical tether to sunlight was severed, the brain uses this “phantom” space to generate internal models.

Programmed Cell Death Protein 1 (PD-1) and Programmed Cell Death Ligand 1 (PD-L1) Immunotherapy: A Promising Breakthrough in Cancer Therapeutics

PD-1/PD-L1 Inhibitors Implications in Common Human Cancers.

Lung cancer: the landscape of lung cancer treatment has been profoundly reshaped by tumor immunotherapy directed at PD-1/PD-L1. Notably, the effectiveness of PD-L1 inhibitors surpasses that of chemotherapy, particularly in advanced non-small cell lung cancer (NSCLC) patients exhibiting elevated PD-L1 levels. This potency is equally evident among patients with previously untreated metastatic squamous NSCLC. Moreover, when considering patients with NSCLC who have undergone prior treatment, a decreased rate of disease progression is more frequently observed in response to PD-1/PD-L1 inhibitors, as opposed to conventional chemotherapy. This observation holds true, particularly for patients with an extensive metastatic burden and an adverse prognosis. In current clinical therapeutics, a strategic alliance between PD-1/PD-L1 immune checkpoint inhibitors and chemotherapeutic agents has emerged as a cornerstone of treatment. This approach attests to the heightened value these inhibitors bring to the therapeutic arsenal. The rapid evolution of anti-PD-1/PD-L1 inhibitors for advanced NSCLC stands as an instrumental factor in enhancing patient outcomes, charting a promising trajectory toward improved prognosis [,]. In a recent study, neoadjuvant PD-1 inhibitor sintilimab was administered to individuals with NSCLC. The outcomes revealed that a notable 40.5% of participants achieved a major pathological response, while a commendable 10.8% realized a complete remission at the pathological level [].

Prostate cancer: currently, PD-1/PD-L1 immune checkpoint inhibitors have ushered substantial clinical advantages for individuals with prostate cancer. A recent study has put forth the notion that synergizing PD-1/PD-L1 checkpoint inhibitors with radiotherapy presents a promising avenue in the management of prostate cancer []. However, it is noteworthy that the impact of PD-L1/PD-1 blockade in the context of prostate cancer appears comparatively muted in contrast to its influence on other cancer types. This discrepancy stems from the diminished immunogenicity characterizing prostate cancers [].

ATLAS sets record limits on Higgs boson’s self-interaction

One of the biggest open questions in particle physics today is how the Higgs boson interacts with itself. This “self-coupling” could help explain the evolution of the early universe and the mechanism that gives mass to elementary particles. To try to shed light on this fundamental interaction, the ATLAS Collaboration has recently studied one of the “golden” decay channels of a pair of Higgs bosons, where one Higgs boson decays into two photons and the other into a pair of bottom quarks.

The evolution of high-order genome architecture revealed from 1,000 species

Now online! Comparative Hi-C analysis across 1,025 species reveals that genome architecture has evolved along distinct trajectories, with plants favoring global folding and animals developing checkerboard compartmentalization, yet both converge on spatial organization as a conserved strategy for gene regulation.

Memory T Cells in Respiratory Virus Infections: Protective Potential and Persistent Vulnerabilities

Respiratory virus infections, such as those caused by influenza viruses, respiratory syncytial virus (RSV), and coronaviruses, pose a significant global health burden. While the immune system’s adaptive components, including memory T cells, are critical for recognizing and combating these pathogens, recurrent infections and variable disease outcomes persist. Memory T cells are a key element of long-term immunity, capable of responding swiftly upon re-exposure to pathogens. They play diverse roles, including cross-reactivity to conserved viral epitopes and modulation of inflammatory responses. However, the protective efficacy of these cells is influenced by several factors, including viral evolution, host age, and immune system dynamics.

Gut microbiome is associated with recurrence-free survival in patients with resected high-risk melanoma receiving adjuvant immune checkpoint blockade

Respiratory virus infections, such as those caused by influenza viruses, respiratory syncytial virus (RSV), and coronaviruses, pose a significant global health burden. While the immune system’s adaptive components, including memory T cells, are critical for recognizing and combating these pathogens, recurrent infections and variable disease outcomes persist. Memory T cells are a key element of long-term immunity, capable of responding swiftly upon re-exposure to pathogens. They play diverse roles, including cross-reactivity to conserved viral epitopes and modulation of inflammatory responses. However, the protective efficacy of these cells is influenced by several factors, including viral evolution, host age, and immune system dynamics. This review explores the dichotomy of memory T cells in respiratory virus infections: their potential to confer robust protection and the limitations that allow for breakthrough infections. Understanding the underlying mechanisms governing the formation, maintenance, and functional deployment of memory T cells in respiratory mucosa is critical for improving immunological interventions. We highlight recent advances in vaccine strategies aimed at bolstering T cell-mediated immunity and discuss the challenges posed by viral immune evasion. Addressing these gaps in knowledge is pivotal for designing effective therapeutics and vaccines to mitigate the global burden of respiratory viruses.

Monster black holes are silencing star formation across the universe

Giant black holes may be secretly controlling how entire clusters of galaxies grow. A blazing supermassive black hole can influence far more than its own galaxy. Scientists found that quasars emit radiation strong enough to shut down star formation in nearby galaxies millions of light-years away. This could explain why some galaxies near early quasars appear faint or missing. The finding suggests galaxies grow and evolve together, not in isolation.

Powerful radiation from active supermassive black holes, which are believed to sit at the center of most galaxies, can do more than shape their own surroundings. A new study led by Yongda Zhu at the University of Arizona suggests these black holes can also slow the formation of stars in galaxies located millions of light-years away.

“Traditionally, people have thought that because galaxies are so far apart, they evolve largely on their own,” said Zhu, the study’s lead author, whose findings were published in The Astrophysical Journal Letters. “But we found that a very active, supermassive black hole in one galaxy can affect other galaxies across millions of light-years, suggesting that galaxy evolution may be more of a group effort.”

ALMA and JWST investigate giant disk galaxy’s formation and evolution

European astronomers have used the Atacama Large Millimeter Array (ALMA) and the James Webb Space Telescope (JWST) to observe a recently discovered giant disk galaxy known as ADF22.1. Results of the new observations, published April 8 on the arXiv preprint server, shed more light on the formation and evolution of this galaxy.

ADF22.1, also known as ADF22.A1, is a giant disk barred spiral galaxy residing in a proto-cluster known as SSA22 at a redshift of 3.09. It has an effective radius of some 22,800 light years and a stellar mass of about 100 billion solar masses. Previous observations have found that it is a dusty star-forming galaxy (DSFG) hosting an intrinsically bright yet heavily obscured active galactic nucleus (AGN).

Giant disk galaxies with high stellar masses, like ADF22.1, are generally expected to be quiescent, bulge-dominated systems. Given that ADF22.1 is a starburst galaxy, it is perceived by astronomers as a unique laboratory to explore how early universe galaxies and supermassive black holes (SMBHs) accumulate their mass and ultimately evolve into the most massive elliptical galaxies.

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