Behavioral adaptations after unilateral whisker denervation.

Area of Science:

• Neuroscience
• Sensory systems biology
• Animal behavior

Background:

• The rodent whisker system is a key model for studying neural plasticity.
• Rodents rely on bilateral whiskers for environmental sensing.
• The behavioral consequences of unilateral whisker denervation are not well understood.

Purpose of the Study:

• To investigate the impact of unilateral whisker denervation on sensorimotor behaviors in mice.
• To explore adaptive strategies and potential behavioral deficits following whisker loss.
• To assess the role of experience-dependent plasticity in response to whisker system alterations.

Main Methods:

• Adult mice underwent unilateral whisker denervation.
• Behavioral assessments included object inspection, open field navigation, object localization, and gap crossing tasks.
• Anxiety-like behaviors were evaluated.
• The effect of gap crossing task training on anxiety was assessed.

Main Results:

• Mice preferred using intact whiskers for object inspection but showed no change in open field navigation.
• Object localization performance was unaffected, but gap crossing ability was significantly impaired.
• Chronic whisker denervation resulted in increased anxiety-like behavior.
• Training on the gap crossing task successfully rescued anxiety-like behaviors.

Conclusions:

• Mice employ behavioral strategies to compensate for unilateral whisker loss.
• Whisker system damage impacts specific sensorimotor functions like gap crossing and induces anxiety.
• Targeted behavioral training can mitigate negative emotional consequences of sensory system disruption.