Sensory information processing in the dorsal column nuclei by neuronal oscillators.
The dorsal column nuclei, a first relay station of the somatosensory system, express coherent oscillatory activity in the 4-22 Hz frequency range at single unit, multiunit and local field potential levels. This activity appears spontaneously (33% of the cases) or, more commonly (83%), during natural sensory stimulation of the receptive field. Such oscillations are not imposed upon the dorsal column nuclei by incoming sensory afferents nor cortico-nuclear projections, which indicates that they are generated within the dorsal column nuclei. We concluded that dorsal column nuclei transform a non-rhythmic input from the periphery to a populational oscillatory output to the somatosensory thalamus during sensory stimulation.
Panetsos
F
F
Department of Electrical, Electronic and Control Engineering, School of Industrial Engineering and School of Informatics, Universidad Nacional de Educación a Distancia, Madrid, Spain.
Nuñez
A
A
Avendaño
C
C
D000344:Afferent Pathways / Q000502:physiology; D000758:Anesthesia; D000818:Animals; D004594:Electrophysiology; D009044:Motor Cortex / Q000166:cytology / Q000502:physiology*; D009474:Neurons / Q000502:physiology; D010812:Physical Stimulation; D051381:Rats; D012677:Sensation / Q000502:physiology*; D013003:Somatosensory Cortex / Q000166:cytology / Q000502:physiology*; D013787:Thalamic Nuclei / Q000166:cytology / Q000502:physiology*