Changes in the Intragastric Environment during Sleep Affect the Statistical Characteristics of Neuron Activity in the Cerebral Cortex
| Autor: | N. G. Bibikov, I. N. Pigarev, I. I. Busygina |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0301 basic medicine
Sensory stimulation therapy General Neuroscience Somatosensory system Sleep in non-human animals 03 medical and health sciences 030104 developmental biology 0302 clinical medicine medicine.anatomical_structure Cerebral cortex Cortex (anatomy) medicine Neuron Psychology Neuroscience Neuroscience of sleep 030217 neurology & neurosurgery Slow-wave sleep |
| Zdroj: | Neuroscience and Behavioral Physiology. 46:64-72 |
| ISSN: | 1573-899X 0097-0549 |
| DOI: | 10.1007/s11055-015-0199-0 |
| Popis: | Neuron activity in the somatosensory zone of the cortex was studied during slow-wave sleep in cats. The statistical characteristics of background spike activity were calculated before and after changes in the intragastric environment induced by intragastric administration of 50 ml of water. This procedure had no effect on the depth of sleep. There was also no change in the mean spike frequency or local coefficients of variation. Changes in the degree of chaos in spike activity before and after administration of water were assessed by calculating the relationship between the Fano factor and the duration of the analysis time interval. In 40 cells, this relationship was described by a power function with an index of >0.2, which is evidence that background activity was fractal in nature. Intragastric administration of water altered the index of this function in 18 neurons. Values of this function for cortical neurons during waking are known to decrease with increases in specific sensory stimulation. Our results provide evidence that during slow-wave sleep signals from the stomach are included in the afferent stream to cortical zones involved in analysis of somatosensory information during waking. |
| Databáze: | OpenAIRE |
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