The development of the Gray-Wilson Personality Questionnaire is described; this is an instrument designed to measure human equivalents of six animal behaviour paradigms--Approach, Active Avoidance, Passive Avoidance, Extinction, Fight and Flight. Although these six scales showed satisfactory internal consistency they failed to link up into the three major systems suggested by Gray's personality...

Effective approach/avoidance goal pursuit is critical for attaining long-term health and well-being. Research on the neural correlates of key goal-pursuit processes (e.g., motivation) has long been of interest, with lateralization in prefrontal cortex being a particularly fruitful target of investigation. However, this literature has often been limited by a lack of spatial specificity and has n...

Open field activity was studied in Wistar rats. Animals with low scores of ambulatory and rearing behaviours were grouped as hypoactive and those with high scores as hyperactive. Acquisition of active avoidance learning in a shuttle box was studied in the two groups. Hyperactive rats in contrast to hypoactive rats showed a better acquisition of avoidance learning. Learning was suppressed in bot...

Much of the early research in aversive learning concerned motivation and reinforcement in avoidance conditioning and related paradigms. When the field transitioned toward the focus on Pavlovian threat conditioning in isolation, this paved the way for the clear understanding of the psychological principles and neural and molecular mechanisms responsible for this type of learning and memory that ...

Many works have recently addressed the issue of congestion control for multicast communications and the problem is known to be highly complex. Scalability, responsiveness, stability and fairness with TCP are some of the required properties. In this paper, we present a congestion avoidance scheme for bulk data distribution called AMCA (Active-based Multicast Congestion Avoidance algorithm) that ...

High-speed assembly makes strict demands on path and trajectory planning systems. In such systems the stages of path planning, trajectory planning, andìow-level' control are normally separated, which admits functional simplicity but may not produce the most useful trajectories. Thus we have been exploring the possibility of merging the levels, by allowing the path planner to generate the trajec...