Tonotopic-column-dependent variability of neural encoding in the auditory cortex of rats

Highlights ► We tested whether cortical encoding of stimulus depends on functional columns. ► Tone-evoked multi-unit activities in the auditory cortex of rats were analyzed. ► Information carried by spike counts and the first spike latency was estimated. ► Neural activities with an identical best fr...

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Bibliographic Details
Published in:Neuroscience 2012-10, Vol.223, p.377-387
Main Authors: Yokota, R, Aihara, K, Kanzaki, R, Takahashi, H
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Action Potentials - physiology
Animals
auditory cortex
Auditory Cortex - cytology
Auditory Pathways - physiology
Biological and medical sciences
Brain Mapping
Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation
Evoked Potentials, Auditory - physiology
first spike latency
functional column
Fundamental and applied biological sciences. Psychology
heterogeneity
Male
mutual information
Neurology
Neurons - physiology
Rats
Rats, Wistar
Reaction Time - physiology
sparse coding
Vertebrates: nervous system and sense organs
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Summary:Highlights ► We tested whether cortical encoding of stimulus depends on functional columns. ► Tone-evoked multi-unit activities in the auditory cortex of rats were analyzed. ► Information carried by spike counts and the first spike latency was estimated. ► Neural activities with an identical best frequency (BF) varied among units. ► This variance was BF-dependent, supporting columnar differences of encoding.
ISSN:0306-4522
1873-7544
DOI:10.1016/j.neuroscience.2012.07.051