Related Experiment Video
Updated: Mar 13, 2026
07:12
Studying the Coding Profiles of Somatic Stimulation on Cardiac-locked Neuronal Responses in the Rat Spinal Dorsal Horn
Published on: May 23, 2025
680
A Neural Code That Is Isometric to Vocal Output and Correlates with Its Sensory Consequences
Alexei L Vyssotski1, Anna E Stepien1, Georg B Keller1
1Institute of Neuroinformatics, Neuroscience Center Zurich, University of Zurich/ETH Zurich, Zurich, Switzerland.
Plos Biology
|October 11, 2016
Summary
The nucleus interface of the nidopallium (NIf) in zebra finches codes for upcoming sounds during vocal performance. Its neural activity precedes vocalizations, suggesting a role in learned motor control.
Area of Science:
- Neuroscience
- Animal Behavior
- Bioacoustics
Background:
- Complex learned behaviors, like birdsong, rely on precise motor control.
- The nucleus interface of the nidopallium (NIf) is crucial for song production and auditory-motor integration in songbirds.
Purpose of the Study:
- To investigate the role of NIf cortical inputs in driving complex learned behaviors, specifically birdsong.
- To determine the temporal relationship between NIf activity and vocalizations.
Main Methods:
- Electrophysiological recordings in juvenile and adult zebra finches during singing.
- Analysis of NIf projection neuron spiking patterns relative to vocalizations.
- Examination of NIf activity in response to auditory feedback manipulations.
Main Results:
- NIf projection neuron spikes precede vocalizations by tens of milliseconds.
- NIf activity patterns are highly similar for repeated vocal elements, indicating a local isometry.
- NIf multiunit firing precedes auditory cortical responses by approximately 50 ms, showing delayed congruence with auditory feedback representation.
Conclusions:
- The NIf appears to code for imminent acoustic events within the vocal performance.
- Findings suggest NIf plays a critical role in the real-time control of learned vocalizations.
Related Concept Videos
01:28Major Somatic Sensory Pathways
3.3K
Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
3.3K
01:18Functions of the Nervous System
8.4K
The nervous system is responsible for coordinating and regulating the body's functions. It functions through three main processes: sensory, integrative, and motor processes. Sensory function involves the detection and transmission of information about internal and external stimuli from sensory receptors to the CNS. The CNS processes this information through an integrative function, where it interprets and makes decisions based on the incoming sensory information. Finally, the motor function...
8.4K
01:37Neural Regulation
44.0K
Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
44.0K
01:20Motor Unit Stimulation
4.4K
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
4.4K
01:22Hair Cells
46.2K
Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
46.2K
01:33Somatosensation
44.5K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
44.5K