IN-FLIGHT ELECTROCORTICOGRAMS COMPARED TO GROUND CONTROLS IN BEHAVINGMONKEYS - DIFFERENCES IN ATTENTIONAL STATES

Electrocorticographic recordings were taken from the posterior parieta l cortical area in monkeys performing a variety of tasks on ground and in space flight. The question addressed here was whether ECoG analysi s would be a reliable index of attention to the learned task. It is sh own that measuring the instantaneous frequency, rather than instrument ally evaluating the spectral content of the ECoG, may provide useful i nformation on the attentional states of the animals. Investigations on Rhesus performed in Paris provided a useful database to evaluate the more complex results obtained in the Russian experiments with space fl ights, during which, according to the ECoG marker, some attentional di sorders occurred. It is not unreasonable to envisage using similar eva luation in the scalp EEG in human flights in the future. (C) 1998 Publ ished by Elsevier Science B.V. All rights reserved.