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Updated: May 11, 2026

Stereotactically-guided Ablation of the Rat Auditory Cortex, and Localization of the Lesion in the Brain
Published on: October 11, 2017
Corticostriatal neurons in auditory cortex drive decisions during auditory discrimination
Petr Znamenskiy1, Anthony M Zador
1Watson School of Biological Sciences, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA.
Researchers explored how the brain transforms sound information into actions using a rat decision-making task. Manipulating corticostriatal neurons influenced auditory choices, revealing their role in sensory-motor transformations.
Area of Science:
- Neuroscience
- Auditory Perception
- Decision Making
Background:
- Neural pathways transmitting auditory information to the cortex are understood.
- The mechanism for converting auditory representations into motor commands remains unclear.
Purpose of the Study:
- To investigate the transformation of auditory information into motor commands.
- To elucidate the role of corticostriatal projection neurons in auditory decision-making.
Main Methods:
- Utilized a perceptual decision-making task in rats involving auditory frequency discrimination.
- Employed channelrhodopsin-2 (ChR2)-mediated stimulation and archaerhodopsin-3 (Arch)-mediated inactivation of corticostriatal neurons.
Main Results:
- Stimulation of corticostriatal neurons biased decisions according to their frequency tuning.
- Inactivation of these neurons led to opposite decision biases.
- Demonstrated a causal link between corticostriatal activity and auditory choices.
Conclusions:
- Corticostriatal projection neurons play a critical role in auditory decision-making.
- These neurons mediate the transformation of sensory information into motor commands.
- Widespread striatal projections suggest a general mechanism for sensory cortex control of motor decisions.
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