18 papers · ranked by Valyu relevance
Nicolas Mongiardino Koch, Pablo Milla Carmona
Much of our understanding of the history of life hinges upon time calibration, the process of assigning absolute times to cladogenetic events. Bayesian approaches to time scaling phylogenetic trees have dramatically grown in complexity, and depend today upon numerous methodological choices. Arriving at objective…
Nicolás Mongiardino Koch, Jeffrey R Thompson, Avery S Hiley, Marina F McCowin + 9 more
Echinoids are key components of modern marine ecosystems. Despite a remarkable fossil record, the emergence of their crown group is documented by few specimens of unclear affinities, rendering their early history uncertain. The origin of sand dollars, one of its most distinctive clades, is also unclear due to an…
Nicolás Mongiardino Koch, Jeffrey R Thompson, Avery S Hatch, Marina F McCowin + 7 more
Echinoids are key components of modern marine ecosystems. Despite a remarkable fossil record, the emergence of their crown group is documented by few specimens of unclear affinities, rendering much of their early history uncertain. The origin of sand dollars, one of its most distinctive clades, is also unclear due to…
Daniel R. Schonhaut, Zahra M. Aghajan, Michael J. Kahana, Itzhak Fried
Time and space are principle organizing dimensions of human experience. Whereas separate lines of study have identified neural correlates of time and space, little is known about how these representations converge during self-guided experience. Here we asked how neurons in the human brain represent time and space…
Sepehr Sima, Mehdi Sanayei
Time and space are two intertwined contexts that frame our cognition of the world and have shared mechanisms. A well-known theory on this case is “A Theory of Magnitude (ATOM)” which states that the perception of these two domains shares common mechanisms. However, evidence regarding shared computations of time and…
Marilina Mastrogiuseppe, Natasha Bertelsen, Maria Francesca Bedeschi, Sang Ah Lee
Recent theories of episodic memory propose that the hippocampus provides the spatiotemporal framework for episodic memories. If this is true, does the development of episodic memory depend on the binding of space and time? And does this rely, at least partly, on normal hippocampal function? We investigated the…
Anastasia Malyshevskaya, Alex Miklashevsky, Martin H. Fischer, Christoph Scheepers + 2 more
In many Western cultures, the processing of temporal words related to the past and to the future is associated with left and right space, respectively - a phenomenon known as the horizontal Mental Time Line (MTL). While this mapping is apparently quite ubiquitous, its regularity and consistency across different types…
Gerald E. Marsh
This essay examines our fundamental conceptions of time, spacetime, the asymmetry of time, and the motion of a quantum mechanical particle. The concept of time has multiple meanings and these are often confused in the literature and must be distinguished if any light is to be thrown on this age-old issue. The asymmetry…
Dean V. Buonomano, Carlo Rovelli
- 1. Departments of Neurobiology and Psychology, University of California, Los Angeles. Los Angeles, 90095. - 2. Aix Marseille University, Université de Toulon, CNRS, CPT, 13288 Marseille, France - 3. Perimeter Institute, 31 Caroline Street North, Waterloo, Ontario N2L 2Y5, Canada - 4. The Rotman Institute of…
M. Lachièze-Rey
This paper explores the status of some notions which are usually associated to time, like datations, chronology, durations, causality, cosmic time and time functions in the Einsteinian relativistic theories. It shows how, even if some of these notions do exist in the theory or for some particular solution of it, they…
Gasperini, Maurizio
Space and time: after the wonderful of Einstein, and his relativistic description of the world, we are all tempted to put space and time on the same level, implicitly assuming a close physical and conceptual equivalence between these two basic ingredients of Nature. The aim of this short Essay is to try to convince the…
Orfeu Bertolami
In contemporary physics space and time are intertwined entities so that kinematical and dynamical quantities are expressed in the four-dimensional space-time. This formulation seems to contradict our every-day experience and perception according to which space and time are distinct entities. In this brief report we…
Umberto Lucia, Giulia Grisolia
Causality is the relationship between causes and effects. Following Relativity, any cause of an event must always be in the past light cone of the event itself, but causes and effect must always be related to some interactions. In this paper, causality is developed as a consequence of the analysis of the Einstein…
Richard A. Muller, Shaun Maguire
The progression of time can be understood by assuming that the Hubble expansion takes place in 4 dimensions rather than in 3. The flow of time consists of the continuous creation of new moments, new nows, that accompany the creation of new space. This model suggests a modification to the metric tensor of the vacuum…
Camillo Di Giulio
Our anatomy and body functions are related to gravity, we are the result of our gravity. Neurons, bones, muscles, and the whole support system were all developed in response to the gravity. The way we grow, we run, we adapt and the development of diseases depends on gravity force (Aubert et al., [2]). Enzymes and gene…
Andres M. Bran, Peter F. Stadler, Juergen Jost, Guillermo Restrepo
The periodic system emerges by intertwining order and similarity relationships among chemical elements, which in turn arise from known substances at a given time that constitute the chemical space. Although the system has been adjusted to accommodate new elements, the connection with the chemical space has been largely…
Daniel León-Periñán, Alfonso Fernández-Álvarez, Fernando Monje-Casas
Nuclear movements during meiotic prophase, driven by cytoskeleton forces, are a broadly conserved mechanism in opisthokonts and plants to promote pairing between homologous chromosomes. These forces are transmitted to the chromosomes by specific associations between telomeres and the nuclear envelope during meiotic…
Özge Ekin Gün
In quantum gravity space and time lose their status as fundamental parts of the physical reality. However, according to Kant, space and time are the a priori conditions of our experience. Does Kantian characterization of these notions give constraints to quantum gravity, or does quantum gravity make Kantian…