Experimental Brain Research

, Volume 88, Issue 1, pp 229–232 | Cite as

Simultaneous recording of lagged and nonlagged cells in the cat dorsal lateral geniculate nucleus

  • E. Hartveit
Research Note

Summary

It has been suggested that lagged and nonlagged cells in the cat dorsal lateral geniculate nucleus (LGN) represent state-dependent response modes of the same class of LGN cells. In two separate experiments with single-unit recording in the LGN of anaesthetized and paralysed adult cats, a lagged and a nonlagged X-cell were recorded simultaneously with the same microelectrode. For each pair of cells, the amplitude of the action potentials was sufficiently different to allow separate compilation of peri-stimulus-time-histograms. For all 4 cells, the visual response pattern to a stationary flashing light spot was typical of their respective cell class. These findings support the hypothesis that lagged and nonlagged cells are separate cell classes and indicate that the population of LGN cells do not appear as lagged during one state of modulatory input and as nonlagged during another.

Key words

Dorsal lateral geniculate nucleus Lagged cells Nonlagged cells Sensory processing Cat 

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • E. Hartveit
    • 1
  1. 1.Institute of Basic Medical Sciences, Department of NeurophysiologyUniversity of OsloOslo 3Norway

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