As shown by the development of Special Relativity the simultaneity concept should be related to that of reference frame. Poincaré proposed to define the simultaneity of two events by means of light signals following what is nowadays known as the Einstein simultaneity convention. The need of a simultaneity definition is present also in general relativity and in curved spacetimes in order to prov...

We aimed to examine the effects of subthreshold synchrony and asynchrony on the perception of simultaneity. We rendered simultaneous or asynchronous luminance changes below detection thresholds by embedding them in a sequence of rapidly onsetting flankers. Still, simultaneity of subthreshold luminance changes can influence decisions concerning the simultaneity of clearly visible changes in lumi...

We consider the problem of uniqueness of certain simultaneity structures in flat spacetime. Absolute simultaneity is specified to be a nontrivial equivalence relation which is invariant under the automorphism group Aut of spacetime. Aut is taken to be the identity-component of either the inhomogeneous Galilei group or the inhomogeneous Lorentz group. Uniqueness of standard simultaneity in the f...

A relation is transitive if and only if from the fact that A has a relation to B, and B has a relation C, it necessarily follows that A also has a relation to C. As a relation fulfilling this requirement, consider simultaneity understood as two events occurring at the same time and only at the same time (thus this is not a case of mere partial temporal overlap): If A and B share all the same te...

The categorical semantics of the primary taxis distant nonsimultaneity is actualized in statements with prepositions temporal vor and nach. term «primary non-simultaneity» should be understood as taxis-chronological precedence following. Primary non-simultaneity presence temporal-aspectual quantifiers statements, acting delimitators explicators non-simultaneity.

We developed a computational model for automatically voicing chords based on a Bayesian network. Automatic chord voicing is difficult because it is necessary to choose extended notes and inversions by taking into account musical simultaneity and sequentiality. We overcome this difficulty by inferring the most likely chord voicing using a Bayesian network model where musical simultaneity and seq...

Autism spectrum disorders (ASDs) are associated with anomalies in time perception. In a perceptual simultaneity task, individuals with ASD demonstrate superior performance compared to typically developing (TD) controls. γ-activity, a robust marker of visual processing, is reportedly altered in ASD in response to a wide variety of tasks and these differences may be related to superior performanc...