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

Int J Psychophysiol. 1997 Jun;26(1-3):205-27. doi: 10.1016/s0167-8760(97)00765-4.

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 Schürmann, 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.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Acoustic Stimulation
  • Animals
  • Auditory Cortex / cytology
  • Auditory Cortex / drug effects
  • Auditory Cortex / physiology*
  • Electrophysiology
  • Humans
  • Neurons / drug effects
  • Neurons / physiology*
  • Photic Stimulation
  • Physical Stimulation
  • Somatosensory Cortex / cytology
  • Somatosensory Cortex / drug effects
  • Somatosensory Cortex / physiology*
  • Visual Cortex / cytology
  • Visual Cortex / drug effects
  • Visual Cortex / physiology*