Feasibility of controlled micturition through electric stimulation

Area of Science:

• Neuroscience
• Biomedical Engineering
• Urology

Background:

• Bioelectric phenomena have been known for millennia, but controlled bladder emptying via electrical stimulation is a recent technological achievement.
• Transistor technology and radio frequency induction have spurred interest in bladder stimulation techniques.
• Various methods like spinal cord, pelvic nerve, and direct bladder stimulation have been explored, with limited success.

Observation:

• Direct bladder stimulation shows promise in lower motor neuron conditions.
• Challenges include sphincter control, pain, electrode issues, and tissue response (fibroplasia).
• Male-specific factors like prostate, urethral length, and erection responses require further investigation.

Findings:

• Experimental studies in canines over three years focused on spinal cord and sacral root stimulation.
• Stimulation of the ventral sacral root, dominant for bladder response, is identified as efficient.
• Combining ventral sacral root stimulation with selective somatic fiber division enhances simulated micturition.

Implications:

• This research offers insights into achieving controlled micturition through targeted neural stimulation.
• Findings could advance therapeutic strategies for bladder dysfunction.
• Further investigation is needed to address remaining challenges and male-specific responses.