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1230 nature neuroscience volume 4 no 12 december 2001 Sensory cortices perform sophisticated pattern recognition tasks,
 

Summary: 1230 nature neuroscience volume 4 no 12 december 2001
articles
Sensory cortices perform sophisticated pattern recognition tasks,
elaborating the thalamic input via a variety of functionally dif-
ferent synapses across the six layers. The role of the auditory cor-
tex in processing and modifying auditory signals, however, is
largely unknown. Thalamic inputs to primary auditory cortex
(A1) show several types of responses to acoustic stimuli, which
fall into two broad classes of `transient' and `sustained' firing pat-
terns13. Sustained responses saturate and can even be inhibited
at increasing sound pressure level (SPL), whereas transient
responses do not saturate or decrease at increasing SPL, suggest-
ing differential mechanisms of synaptic processing. How these
afferent signals are processed by downstream elements is unknown
and may rely on distinct intrinsic conductances, synaptic inputs,
ensemble coding or a combination of these or other factors.
Neurons within layer II/III of the auditory cortex receive direct
thalamic input in addition to inputs from both layer IV spiny stel-
late neurons and other layer II/III neurons46. Output from layer
II/III pyramidal neurons project to local layer V and layer II/III

  

Source: Andrzejak, Ralph Gregor - Departament de Tecnologia, Universitat Pompeu Fabra

 

Collections: Computer Technologies and Information Sciences