Summary: Researchers have discovered a new molecule that could increase the ultra-fast decision-making capabilities of computers. The simple molecule provides a new electronic circuit element in which complex logic is encoded in nanoscale material properties.
Source: University of Limerick.
An international team of scientists including researchers at University of Limerick in Ireland has discovered a new molecule that could further increase ultra-fast decision making in computers.
Mushrooms and other kinds of fungi are often associated with witchcraft and are the subjects of longstanding superstitions. Witches dance inside fairy rings of mushrooms according to German folklore, while a French fable warns that anyone foolish enough to step inside these ‘sorcerer’s rings’ will be cursed by enormous toads with bulging eyes. These impressions come from the poisonous and psychoactive peculiarities of some species, as well as the overnight appearance of toadstool ring-formations.
Given the magical reputation of the fungi, claiming that they might be conscious is dangerous territory for a credentialled scientist. But in recent years, a body of remarkable experiments have shown that fungi operate as individuals, engage in decision-making, are capable of learning, and possess short-term memory. These findings highlight the spectacular sensitivity of such ‘simple’ organisms, and situate the human version of the mind within a spectrum of consciousness that might well span the entire natural world.
Before we explore the evidence for fungal intelligence, we need to consider the slippery vocabulary of cognitive science. Consciousness implies awareness, evidence of which might be expressed in an organism’s responsiveness or sensitivity to its surroundings. There is an implicit hierarchy here, with consciousness present in a smaller subset of species, while sensitivity applies to every living thing. Until recently, most philosophers and scientists awarded consciousness to big-brained animals and excluded other forms of life from this honour. The problem with this favouritism, as the cognitive psychologist Arthur Reber has pointed out, is that it’s impossible to identify a threshold level of awareness or responsiveness that separates conscious animals from the unconscious. We can escape this dilemma, however, once we allow ourselves to identify different versions of consciousness across a continuum of species, from apes to amoebas. That’s not to imply that all organisms possess rich emotional lives and are capable of thinking, although fungi do appear to express the biological rudiments of these faculties.
Excitatory/inhibitory fusion organoids OSCILLATE! In combination with iPSC technology this allows patient specific drug tailoring, as exemplified by Rett Syndrome in this preprint.
Integrated Information Theory is one of the leading models of consciousness. It aims to describe both the quality and quantity of the conscious experience of a physical system, such as the brain, in a particular state. In this contribution, we propound the mathematical structure of the theory, separating the essentials from auxiliary formal tools. We provide a definition of a generalized IIT which has IIT 3.0 of Tononi et al., as well as the Quantum IIT introduced by Zanardi et al. as special cases. This provides an axiomatic definition of the theory which may serve as the starting point for future formal investigations and as an introduction suitable for researchers with a formal background.
Integrated Information Theory (IIT), developed by Giulio Tononi and collaborators [5, 45–47], has emerged as one of the leading scientific theories of consciousness. At the heart of the latest version of the theory [19, 25 26, 31 40] is an algorithm which, based on the level of integration of the internal functional relationships of a physical system in a given state, aims to determine both the quality and quantity (‘Φ value’) of its conscious experience.
The most powerful way to combat anxiety is to consistently work on building your resilience and mental strength. “Along the way, you’ll learn to appreciate or even welcome certain kinds of mistakes for all the new information they bring you,” says neuroscientist Wendi Suzuki.
Summary: Researchers find a region of the brain stem called the periaqueductal gray may mediate religiosity and spirituality in humans.
Source: Elsevier.
Scientists have long suspected that religiosity and spirituality could be mapped to specific brain circuits, but the location of those circuits remains unknown. Now, a new study using novel technology and the human connectome, a map of neural connections, has identified a brain circuit that seems to mediate that aspect of our personality.
I believe the transduction theory has a great deal to offer in our scientific study of the mind–brain relationship. It is, of course, a dualist theory. It provides a framework for understanding the close link between brain states and mental states, yet at the same time, it explains mental states in a way that does not invoke nonsensical materialist metaphysics.
A successful understanding of the mind–brain relationship will necessarily involve understanding the brain as a transduction device in one way or another. Such an understanding could prove enormously fruitful and can help us move beyond the current materialist framework in which neuroscience is practiced, which has has held us so far back in our understanding of the mind and the brain. The brain is obviously material but it is just as obvious that the mind has immaterial abilities.
We accept that the ear is a transducer for sound to hearing and the eye is a transducer for light to vision. It is reasonable to infer that the brain is a transducer for thought to body. Transduction theory is a plausible approach to understanding the connection between the mind and the brain. It should be taken seriously by neuroscientists and philosophers of the mind.
Quantum mechanics generally refers to the wave-like properties of things that are commonly considered to be particles, such as electrons. This article discusses evidence of a quantum mechanical switching function that is performed by strictly biological structures—ferritin protein layers that are found in cells including neural tissue.
Many scientists are investigating quantum biology, which is the application of quantum mechanics to investigate biological functions. It has recently been used to answer a number of previously unanswered questions, such as the mechanisms behind photosynthesis and the way birds can perceive magnetic fields. These quantum biological effects generally involve electrons hopping or tunneling over distances of several nanometers, behavior that is incompatible with particles but which makes sense with waves.
Ferritin is a spherical iron storage protein that is found in plants and animals. Early studies of ferritin to look for quantum mechanical effects were conducted at cryogenic temperatures, because it was thought that biological structures were too “warm and wet” to exhibit such effects. Those studies were somewhat inconclusive. But when ferritin was subsequently electrically tested at room temperature, it was discovered that electron tunneling was occurring.
Past neuroscience studies have consistently showed that sleep plays an important role in memory consolidation. For instance, some neuroimaging research showed that the brain regions that are activated while humans are encoding waking experiences can later be reactivated during sleep, particularly during non-rapid eye movement (NREM) sleep.
Interestingly, the same brain regions are also associated with increased local slow-wave activity (SWA). Interestingly, the activation of these brain regions and SWA are known to be associated with two mechanisms related to memory optimization, namely neural replay and synaptic homeostasis. These mechanisms are typically associated with improvements in behavior over time.
Researchers at University of Geneva in Switzerland have recently carried out a study aimed at investigating the ways in which the brain selects memories that will be reprocessed during sleep. Their findings, presented in a paper published in Nature Communications, suggest that the brain tends to prioritize the consolidation of memories or life experiences with high motivational relevance, namely those associated with rewards.
Summary: Lower cholesterol levels may put people with schizophrenia at higher risk for violent behaviors, including self-harm and suicide. Researchers say lower cholesterol levels make brain cells less sensitive to serotonin, increasing symptoms of depression, impulsivity, and aggression.
Source: Brunel University.
Linked to lower risk of heart attacks and strokes, low cholesterol may also be a sign people with schizophrenia are at high risk of self-harm, suicide and violence.