Verbs were clustered semantically on the basis of their alternation behaviour, as characterised by their syntactic subcategorisation frames extracted from maximum probability parses of a robust statistical parser, and completed by assigning WordNet classes as selectional preferences to the frame arguments. The clustering was achieved (a) iteratively by measuring the relative entropy between the...

Verbs were clustered seInant ical ly on the basis of their a l te rna t ion behaviom:, as character ised I)y their syut;actic sul)caI;e.gorisation franms extrael:ed from lllllXillllllll proba.bili(;y parses of a robu,st sI;atisl;ical pa.rser, aald eOml~leted by assigning \'VordNe(; classes as se]ecl, ional preferences (;o the fl:ame arl~uments. The clustering was achieved (a) i terat ively by m...

Intra-septal infusions of the gamma-aminobutyric acid (GABA) agonist muscimol impair learning and memory in a variety of tasks. This experiment determined whether hippocampal or entorhinal infusions of the acetylcholinesterase inhibitor physostigmine would reverse such impairing effects on spontaneous alternation performance, a measure of spatial working memory. Male Sprague-Dawley rats were gi...

Recent studies have revealed that sequence variants in genes encoding the α3/α5/β4 nicotinic acetylcholine receptor subunits are associated with nicotine dependence. In this study, we evaluated two specific aspects of executive functioning related to drug addiction (impulsivity and working memory) in transgenic mice over expressing α3/α5/β4 nicotinic receptor subunits. Impulsivity and working m...

This paper describes what we believe to be an error in the implementation of PRI ALT on the inmos transputer, and exhibits anomalous behaviour of that implementation. A correct implementation of comparable complexity is described, and some of the properties of the construct are described. Finally, an attempt is made to describe circumstances in which the behaviour of the existing implementation...

In a study of the capacity of neural grafts to promote functional recovery in rats with fimbria-fornix lesions, 5 groups of rats were studied behaviourally and with acetylcholinesterase (AChE) histochemistry: (1) sham-operated controls; (2) bilateral fimbria-fornix lesions; (3) bilateral lesions plus bilateral solid embryonic septal grafts to the lesion cavity; (4) bilateral lesions plus bilate...

A young woman with spontaneous left pneumothorax had a phasic voltage alternation of her electrocardiogram that resolved with expansion of the lung. Likely explanations for this phenomenon are a respiratory dependent change in cardiac anatomy and a change in the volume conductor with respiration.