We start by presenting the Tip-Of-the-Tongue (TOT) problem and some theories accounting for it. We go then on to consider it within the framework of a neurobiological, computational model: Guided Propagation Networks (GPNs). “Selective facilitation”, a feature of the model, allows us to formulate and test various hypotheses accounting for the impeded access to a target word. We will illustrate ...

The cognitive modeling community is presently divided between two different approaches to the spread of activation through networks. One school holds that symbolic information must be progagated, the other that numeric weights are used and activation spreads in a more analog manner. In this paper we describe a mechanism which allows the two processes to be merged via the introduction into the s...

We present a physiologically plausible spiking neuron-level model of the superior colliculus as part of the saccade-generating visual system. Two major features of the area are the bursting behavior of its output neurons that drive eye movements, and the spreading neuron activation in the intermediate layer during a saccade. We show that the bursting activity profile that drives the main sequen...

Most taxonomies and thesauri offer their users a huge amount of structured data. However, this volume of data is often excessive, and, thus does not fulfill the needs of the users, who are trying to find specific information related to a certain concept. While there are techniques that may partially alleviate this problem (e.g. visual representation of the data), some of the effects of the info...

Postcompletion error (PCE) is a type of systematic procedural error that people are prone to commit when there is one step to perform after they have accomplished their main task goal. A computational cognitive model developed previously for PCE in an interruption paradigm extends to a working memory load and capacity paradigm. The model explains PCE in terms of long-term declarative memory mec...

A novel computational cognitive model explains human procedural error in terms of declarative memory processes. This is an early version of a process model intended to predict and explain multiple classes of procedural error a priori. We begin with postcompletion error (PCE), a type of systematic procedural error that people are prone to commit when there is one step to perform after they have ...

This paper demonstrates a biologicallyand psychologicallyinspired human-like computational memory focusing on the retrieval mechanisms – Spreading Activation and Compound Cue for a companion agent’s episodic memory (EM) that helps the agent to manage it’s memory more efficiently and enable it to have a more natural interaction with the user.

Results of cognitive psychology research are analysed to explain why it is diicult for retrieval system users to bring to mind alternative search terms. A human memory model is modiied in such a way that it produces additional search terms instead of human associations. A small experiment shows that such a spreading activation network can nd alternative terms-with a performance similar to the n...

Research on the cognitive consequences of bilingualism suggests a bilingual advantage: early experience with more than one language predicts better inhibitory control of attention. The mechanisms responsible for this advantage, however, are not well understood. We ask whether depth and time-course of memory encoding may be responsible. We measured bilingual and monolingual adults’ memory for no...