Taking advantage of behavioral changes during development and training to assess sensory coding mechanisms

Title

Taking advantage of behavioral changes during development and training to assess sensory coding mechanisms

Creator

Sarro E C; Rosen M J; Sanes D H

Publisher

New Perspectives on Neurobehavioral Evolution

Date

2011
2011

Description

The relationship between behavioral and neural performance has been explored in adult animals, but rarely during the developmental period when perceptual abilities emerge. We used these naturally occurring changes in auditory perception to evaluate underlying encoding mechanisms. Performance of juvenile and adult gerbils on an amplitude modulation (AM) detection task was compared with response properties from auditory cortex of age-matched animals. When tested with an identical behavioral procedure, juveniles display poorer AM detection thresholds than adults. Two neurometric analyses indicate that the most sensitive juvenile and adult neurons have equivalent AM thresholds. However, a pooling neurometric revealed that adult cortex encodes smaller AM depths. By each measure, neural sensitivity was superior to psychometric thresholds. However, juvenile training improved adult behavioral thresholds, such that they verged on the best sensitivity of adult neurons. Thus, periods of training may allow an animal to use the encoded information already present in cortex.

Subject

amplitude-modulation; auditory cortex; awake macaques; contrast sensitivity; cortex; development; discrimination; gerbil; mongolian; neurophysiology; perception; perceptual; primary auditory-cortex; primate prefrontal; receptive-field plasticity; sound-localization; temporal resolution; training

Format

Book Section

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Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Pages

142-154

Volume

1225

Citation

Sarro E C; Rosen M J; Sanes D H, “Taking advantage of behavioral changes during development and training to assess sensory coding mechanisms,” NEOMED Bibliography Database, accessed May 9, 2021, https://neomed.omeka.net/items/show/6574.

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