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Related Experiment Video

Updated: Jul 19, 2026

Infant Auditory Processing and Event-related Brain Oscillations

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Developmental modulation of the temporal relationship between brain and behavior.

Shane R Crandall¹, Naoya Aoki, Teresa A Nick

¹Department of Neuroscience and Center for Neurobehavioral Development, The University of Minnesota, Minneapolis, MN 55455, USA.

Journal of Neurophysiology

|November 3, 2006

Summary

Songbirds and humans learn vocalizations during a sensitive period. This study reveals that brain activity in the HVC area precedes and follows vocalizations, aiding song development in juvenile zebra finches.

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Area of Science:

Neuroscience
Animal Behavior
Developmental Biology

Background:

Vocal learning in humans and songbirds involves a sensitive period for shaping learned sounds.
The precise neural mechanisms by which sensory feedback influences vocalization development remain largely unknown.

Purpose of the Study:

To investigate the brain mechanisms underlying vocalization shaping by sensory feedback during a critical developmental period.
To examine the relationship between neural activity in the premotor area HVC and song behavior in developing zebra finches.

Main Methods:

Recording of song behavior and neural activity (multielectrode single-unit recording) in juvenile and adult zebra finches.
Analysis of the temporal relationship between HVC bursting activity and vocalizations during song learning.
Investigation of neuronal responses to auditory stimuli.

Main Results:

The temporal dynamics of HVC activity shift during vocal learning, with bursting activity preceding and following vocalizations.
Juvenile zebra finches exhibit prolonged HVC bursting during song learning, inversely correlated with song maturation.
Single fast-spiking neurons in juveniles show activity both before and after vocalization and respond to auditory stimuli.

Conclusions:

Prolonged bursting in the HVC area is a key feature of sensorimotor development in vocal learning, analogous to sensory critical periods.
The coincidence of prolonged motor discharge and sensory input in developing song system neurons provides cellular mechanisms for activity-dependent sensorimotor shaping.