Pattern reversal evoked potentials: gender differences and age-related changes in amplitude and latency

Area of Science:

• Neuroscience
• Ophthalmology
• Human Physiology

Background:

• Pattern reversal evoked potentials (PREP) are crucial for assessing visual pathway function.
• Existing literature lacks comprehensive data on PREP across a wide lifespan and diverse demographics.
• Understanding normative PREP values is essential for accurate clinical interpretation.

Purpose of the Study:

• To characterize pattern reversal evoked potential (PREP) component amplitudes and latencies in a large, diverse sample.
• To compare PREP characteristics between males and females across the lifespan.
• To evaluate the efficacy of age- and sex-specific regression analyses for normative data.

Main Methods:

• Binocular PREPs were recorded from 406 healthy individuals aged 6 to 80 years.
• Data were analyzed using regression models, comparing analyses of the entire dataset versus separate analyses for developmental and adult age groups.
• Age- and sex-based differences in PREP latencies and amplitudes were systematically examined.

Main Results:

• PREP latencies generally decreased with maturation, stabilized in adulthood, and increased after the late 20s.
• Males exhibited longer latencies than females in adulthood, with minimal latency differences during development.
• Females consistently showed larger PREP amplitudes than males across the lifespan.

Conclusions:

• Separate regression analyses for developmental and adult age ranges provide more accurate descriptions of PREP changes.
• Normative PREP values are influenced by the age range and sex distribution of the reference sample.
• Clinical applications require age- and sex-matched normative data, considering specific technical and methodological variables.