Modulation of neuronal activity by target uncertainty
Article Abstract:
Visual scenes comprise many elements and as they become more complex there are more possible targets and more uncertainty about which target will be selected for an eye movement. It is still unknown how motor systems accommodate such target uncertainty. It is reasoned that target uncertainty activity is evident in the saccadic motor system in the superior colliculus. It was found that neural activity preceding target selection decreased, as target uncertainty increased, following systematic alterations to stimuli. This shows that neurons involved in movement generation are active well before the selection of a particular movement.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Playing the trump card of uncertainty
Article Abstract:
Republicans are proposing a thorough 'scientific risk analysis' before revising environmental policies. Since scientific methods are found to be doubtful due to limits in data sampling and the complex processes involved, the possibility of hidden motives by involved parties in legalizing risk analysis before imposing the regulation, is not entirely dismissed. Insisting on a scientific evaluation is seen as a futile effort but might prove advantageous in providing a basis for environmental control.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Uncertainty over complementarity?
Article Abstract:
A simple picture of uncontrolled classical momentum establishes the implications of Heisenberg uncertainty principle and its relation to complementarity. Two different views approach the analysis of a random momentum kick. The debate regarding the fundamentality of complementarity and uncertainty principles is made on the basis of Young's double-slit interferometer experiment.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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