Low-frequency oscillations of visual, auditory and somatosensory cortical neurons evoked by sensory stimulation

Author(s): Kruger, K., Akhavan, A. C., Spengler, F., Schoner, G., Schreiner, C. E.

Journal/Book: Int J Psychophysiol. 1997; 26: PO Box 211, 1000 AE Amsterdam, Netherlands. Elsevier Science BV. 205-227.

Abstract: Low-frequency oscillations - LFOs - below 20 Hz in the activity of cortical neurons are a commonly observed property across all sensory modalities. However, the functional significance and potential role of these intrinsic oscillations are not well understood. Here, we attempt to provide a general framework for the interpretation of this phenomenon by considering its properties across several sensory modalities. In the first part, we provide a survey and a general description of low-frequency oscillations (LFOs) at a cellular level observed following adequate [Basar, and Schurmann, 1994]. Sensory stimulation of neurons recorded in three sensory modalities of neocortices in higher mammals. The second part will address some functional aspects of low-frequency oscillations (LFOs) such as stimulus selectivity and so-called 'interference' phenomena, specifically with findings related to 'resetting' and 'gating' of sensory processing streams. Finally, a hypotheses is outlined in which the low-frequency oscillations are regarded as an organizational principle by which continuity of sensory and motor states over time could be accomplished.

Note: Article Dinse HR, Ruhr Univ Bochum Nd 04, Inst Neuroinformat, Box 102148, D-44780 Bochum, GERMANY

Keyword(s): sensory stimulation; low-frequency oscillations (LFOs); stimulus selectivity; SINGLE-NEURON; RECORDINGS; CAT; MECHANISMS; TOPOGRAPHY; RESPONSES; ORGANIZATION; HUMANS; CORTEX

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