Descending Auditory Pathway

The Descending Respiratory Pathway in Man.

The ferret auditory cortex: descending projections to the inferior colliculus.

Descending corticofugal projections are thought to play a critical role in shaping the responses of subcortical neurons. Here, we examine the origins and targets of ferret auditory corticocollicular projections. We show that the ectosylvian gyrus (EG), where the auditory cortex is located, can be subdivided into middle, anterior, and posterior regions according to the pattern of cytochrome oxid...

Descending Connections of Auditory Cortex to theMidbrain and Brain Stem

AI primary auditory cortex AC auditory cortex BDA biotinylated dextran amines BF best frequency CNC cochlear nuclear complex CNIC central of the inferior colliculus DCN dorsal cochlear nucleus DCIC dorsal cortex of the inferior colliculus DNLL dorsal nucleus of the lateral lemniscus DSCF Doppler-shifted constant frequency ECIC external cortex of the inferior colliculus ES electrical stimulation...

A descending dopamine pathway conserved from basal vertebrates to mammals.

Dopamine neurons are classically known to modulate locomotion indirectly through ascending projections to the basal ganglia that project down to brainstem locomotor networks. Their loss in Parkinson's disease is devastating. In lampreys, we recently showed that brainstem networks also receive direct descending dopaminergic inputs that potentiate locomotor output. Here, we provide evidence that ...

The Auditory Pathway of the Epileptic Waltzing

This study deals with degeneration occurring in the auditory pathway of the partially deaf epileptic waltzing mouse. Cellular changes include loss of Nissl material and swelling o€ the neurons. The fibers lose their myelin sheaths and ultimately disappear. These changes occur gradually and throughout the system, so that the animals slowly lose their hearing and finally become deaf. Tests given ...