Visual Evoked Potential Response Among Drug Abusers- A Cross Sectional Study.

Area of Science:

• Neuroscience
• Ophthalmology
• Addiction Medicine

Background:

• Preclinical evidence suggests substance abuse disrupts neurophysiology, specifically altering neural synchronization in Visual Evoked Potentials (VEP).
• Understanding these neurophysiological disturbances is crucial for addressing the neurological impact of drug dependence.

Purpose of the Study:

• To compare VEP waveform latencies and amplitudes between drug abusers and healthy controls.
• To identify early neurological damage in substance abusers for timely intervention and counseling.

Main Methods:

• VEP assessment using a Data Acquisition and Analysis system.
• Study included 58 male drug abusers (15-45 years) and 30 age-matched healthy controls.
• Statistical analysis employed one-way ANOVA and unpaired t-tests.

Main Results:

• Statistically significant differences (p<0.001) in N75 and P100 waveform durations were observed between drug abusers and controls in both eyes.
• A significant decrease in P100 wave amplitude was noted among drug abusers in both eyes.

Conclusions:

• Chronic drug intoxication is linked to reduced P100 amplitude and prolonged N75 and P100 latencies.
• These VEP alterations suggest adverse effects of drug dependence on neural transmission in primary visual brain areas.
• Findings highlight the potential for VEP analysis in detecting drug-induced neurological changes.