Time and again

Time and Again

Two reports in this issue of Neuron, Hsieh et al. (2014) and Ezzyat and Davachi (2014), describe fMRI activity patterns in the human hippocampus that correlate with memory for temporal context. Analogous activity of neural ensembles recorded from the rodent hippocampus suggests a general model for remembering episodes.

Time and Again

This can mean that it was not the first time that he had forgotten her name, or it can mean that he had learned her name and then forgotten it. In the first case, the entire process that is partly described by is repeated. In the second case, it may well have been the first time that he forgot it; but an earlier state – a state in which her name was not present to him – is ...

The Instant Replay Time and Time Again

The instant replay marks a unique occasion where television folds in on itself—it is the instant in which some of the most predominant and tightlyheld theories about television are challenged and subverted. The instant replay erodes the medium’s conceptual (albeit somewhat contentious) pillars of “flow” and “liveness” to a significant degree by way of its interruptive and erstwhile nature. As s...

Behind Time Again

Time and time again: The many ways to represent time

One of the most crucial problems in any computer system that involves representing the world is the representation of time. This includes applications such as databases, simulation, expert systems and applications of Artificial Intelligence in general. In this brief paper, I will give a survey of the basic techniques available for representing time, and then talk about temporal reasoning in a g...