Ben Murdoch

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Autonomous agents must often detect affordances: the set of behaviors enabled by a situation. Affordance detection is particularly helpful in domains with large action spaces, allowing the agent to prune its search space by avoiding futile behaviors. This paper presents a method for affordance extraction via word embeddings trained on a Wikipedia corpus.(More)
  • B D Murdoch
  • South African medical journal = Suid-Afrikaanse…
  • 1980
The incidence of loss of consciousness (LOC) in 389 healthy young South African men was determined and surveyed in relation to ten precipitating stimuli. In 66% of the men the findings were related to electro-encephalographic abnormality. A relatively high group incidence of LOC was found, most frequently associated with head trauma. No relationship between(More)
  • B D Murdoch
  • Aviation, space, and environmental medicine
  • 1991
We summarised and tabulated the literature dealing with the electroencephalogram in pilot selection published since a review in 1976. The incidence of seizure development in healthy groups with epileptiform discharges in their EEGs was found to be very low. An alternative interpretation is offered of the significance of epileptiform discharges in these(More)
Previous studies have shown a low incidence of clinical seizure development in healthy individuals with EEG epileptiform discharge activity. This has tended to de-emphasise the role of the EEG in screening pilots. A call is made for consideration of impairment of function associated with epileptiform discharges as a relevant factor in determination of(More)
  • B D Murdoch
  • South African medical journal = Suid-Afrikaanse…
  • 1982
The clinical ambit of the electro-encephalogram (EEG) is discussed for the benefit of practitioners who do not regularly use this procedure. Some topics covered are: what is measured by an EEG; the report; epileptiform and nonspecific signs in relation to a diagnosis of epilepsy; and limitations and advantages of the EEG.
Pattern reversal visual evoked potentials were recorded in a dentist who had abused nitrous oxide while he showed neurologic impairment and during recovery. The latency of the major positive peak (P100) remained constant during both phases. However, the amplitude of this peak was markedly reduced during the stage of neurologic involvement, and increased(More)