Fox squirrel (Sciurus niger): The fox squirrel is the largest tree squirrel in Illinois, weighing one and three-quarters to two pounds with a length of 19 Â½ to 22 inches. The fur is a mix of rusty-yellow with black with an overall reddish cast. The fur on the ears, belly, and edge of the tail is lighter.
Audiologists are able to measure the speed and intensity of these pulses to determine if there is hearing loss or a lesion that is upsetting the flow of the sound information through the brainstem. This measurement is called a brainstem auditory evoked response (BAER).
1) A respiratory center within the reticular formation (network) of the medullary pons of the brainstem (with 3 centers as outlined below) 2) Chemoreceptors which send afferent or sensory input to the respiratory centers in the brainstem. There are peripheral and central brainstem chemoreceptors.) Neural reflexes which can modify the basic setup. Respiratory Chemoreceptors. 1) A respiratory center within the reticular formation (network) of the medullary pons of the brainstem (with 3 centers as outlined below). 2) Chemoreceptors which send afferent or sensory input to the respiratory centers in the brainstem.