The ascending reticular formation A. When stimulated tends to increas

1.	The ascending reticular formation A. When stimulated tends to increase alertness. B. Transmits impulses to higher centres via a multisynaptic pathway. C. Is activated by collateral branches of sensory neurones. D. Neurones project to most parts of the cerebral cortex. E. Increases its activity during deep sleep.
Answer» A. True Associated with increased electrical activity in cortical regions. B. True Diffuse cortical activity following sensory stimulation occurs later than local postcentral gyrus activity. C. True Sensory fibres ascending to the thalamus send collaterals to reticular nuclei. D. True The diffuse cortical activity following sensory stimulation is abolished by damage to the reticular formation. E. False Decreased activity leads to a higher arousal threshold during sleep.

The ascending reticular formation A. When stimulated tends to increase alertness. B. Transmits impulses to higher centres via a multisynaptic pathway. C. Is activated by collateral branches of sensory neurones. D. Neurones project to most parts of the cerebral cortex. E. Increases its activity during deep sleep.

Answer»

A. True Associated with increased electrical activity in cortical regions.

B. True Diffuse cortical activity following sensory stimulation occurs later than local postcentral gyrus activity.

C. True Sensory fibres ascending to the thalamus send collaterals to reticular nuclei.

D. True The diffuse cortical activity following sensory stimulation is abolished by damage to the reticular formation.

E. False Decreased activity leads to a higher arousal threshold during sleep.

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