Electrophysiological Evidence of Atypical Spatial Attention in Those with a High Level of Self-reported Autistic Traits.

The team hooked 36 college students to an EEG cap. None had an autism diagnosis.

Each student filled out the Autism-Spectrum Quotient. Then they did a simple computer task.

They had to find a red letter among blue shapes. The shapes sometimes flashed on the left or right side. The EEG recorded two brain waves: N2pc (target focus) and PD (distractor blocking).

Students with high autistic traits showed a bigger N2pc wave. Their PD wave was smaller.

A big N2pc means the brain zooms in hard on the target. A small PD means it fails to shut out the junk.

In plain words: they lock onto the goal but can’t filter the clutter. This mix could explain everyday sensory overload.

Laycock et al. (2014) saw the same group struggle when objects popped up fast. Together the papers say speed and clutter both hurt.

KAgiovlasitis et al. (2025) tracked eyes in Indian adults and also found less looking at social pictures. The ERP result here may be the brain basis for that avoidance.

Fernandes et al. (2022) moved from traits to diagnosed ASD adults. They found dampened P200 waves during social scenes. The story line is growing: from college traits to full ASD, early brain attention signals are off.

If a client seems overwhelmed by busy rooms, try cutting visual noise first. Use plain walls, smaller arrays, or cover shelves. Teach them to actively ignore distractors instead of just finding the target. The weak PD wave tells us suppression needs training as much as selection.