3 - When & where Flashcards
Where can you find the spatial pathway in the auditory system?
The spatial pathway is the dorsal pathway. It originates in the caudal belt and parabelt and targets the caudal dorsolateral prefrontal cortex via the posterior parietal cortex.
Location processing generated greater activation in posterior temporal cortex, parietal cortex and superior frontal sulcus.
Where can you find the non-spatial pathway in the auditory system?
The non-spatial pathway is the ventral pathway. It originates in the anterior belt and parabelt and targets rostral and ventral prefrontal areas.
Pitch processing caused greater activity in auditory cortices and inferior prefrontal gyrus.
DLPFC and its function in auditory processing
The activity of the acoustic neurons in DLPFC depends on sound-source location.
Frontal pole of rostral frontal lobe and its function in auditory processing
Involved in verb generation, auditory working memory and musical consonance
Ventral frontal lobe and its function in auditory processing
Involved in non-spatial, higher auditory and language processing
Functional domain hypothesis
Stresses that frontal lobe is organized into separate dorsolateral spatial- and ventrolateral object-processing regions.
Inferior prefrontal gyrus and its function in auditory processing
Processing of pitch changes, auditory word and tone working memory, semantic processing of auditory materials and phoneme discrimination
Is there interaction between the ventral and dorsal pathways?
Yes, there was a significant correlation between temporal and parietal cortices during both pitch and location judgment tasks. This may reflect cross-talk between ventral and dorsal streams and it emphasizes that higher perpetual and cognitive functions involve interaction among many brain areas.
pitch perception task generated greater activation in …
Auditory cortex and inferior frontal gyrus
Location processing generated greater activation in
posterior temporal cortex, parietal cortex and superior frontal sulcus
