EEG Paradox Decoder EO EC 19 channel scan report

Описание: portal.eegparadox.com

🧠 EO / EC EEG Scan
Simple Recording & File Setup Guide

This guide explains how to properly record and upload an Eyes Open / Eyes Closed (EO/EC) EEG scan using multiple channels (up to 19 sites).

✅ What Is an EO / EC Scan?

An EO / EC scan uses two separate EEG recordings:

Eyes Open (EO) recording

Eyes Closed (EC) recording

Both recordings are analyzed together to measure:

Alpha reactivity

Site-by-site differences

Whole-scalp patterns

👉 Each file is processed in full

🎯 When to Use EO / EC

Use this scan when you want to:

Assess alpha reactivity across the whole scalp

Analyze all EEG sites at once

Run a standard multi-channel baseline

Perform clinical or QEEG-style screening

Compare Eyes Open vs Eyes Closed states

🧠 How to Record the Scan (Step-by-Step)
1️⃣ Set Up EEG Cap (Multi-Channel)

Use a standard 10–20 montage

Anywhere from 1 to 19 channels is acceptable

Make sure both recordings use the same electrode setup

Common sites include:
FP1, FP2, F3, F4, F7, F8, FZ
C3, C4, CZ
P3, P4, PZ
O1, O2
T7, T8

2️⃣ Record Eyes Open (EO)

Eyes open

Relaxed, looking forward

No talking

Minimal movement

⏱️ Duration:

Any length (30 seconds to several minutes)

Longer recordings = more stable results

Save the file when done.

3️⃣ Record Eyes Closed (EC)

Eyes closed

Stay awake

Relaxed, no movement

⏱️ Duration:

Ideally the same length as EO

Must be a separate file

Save the file when done.

📁 File Naming (VERY IMPORTANT)

The system uses filenames to know which file is EO and which is EC.

✅ Correct File Name Format

Each file must clearly include EO or EC in the name.

Examples (All Valid)

Paired recordings:

patient_EO.edf

patient_EC.edf

With site or session info:

session1_EO.edf

session1_EC.edf

baseline_EO.edf

baseline_EC.edf

Single-site recordings (also allowed):

F3_EO.edf

F3_EC.edf

❌ Common Mistakes to Avoid

❌ baseline1.edf (no EO or EC)

❌ eyesopen.edf (not recognized)

❌ Combining EO and EC in one file

👉 EO and EC must be TWO SEPARATE FILES.

📄 File Requirements (Simple)

File type: .edf (preferred)

Number of files: exactly 2

One EO

One EC

Channels: 1–19

Duration: Any length (entire file is analyzed)

⚠️ For best results:

Use the same channels in both files

Use similar durations for EO and EC

▶️ Uploading the Files

Select Single Epoch (EC/EO) protocol

Upload both files at the same time

EO file

EC file

If prompted, confirm which file is EO and which is EC

Run the scan

That’s it.

📊 What You’ll Get Back

Your report will include:

Alpha reactivity for each site

Whole-scalp EO vs EC comparison

Site-by-site findings

Highlighted key sites (O1, O2, P3, P4, PZ)

Clear classifications:

Normal

Reduced

Blunted

Excessive

🧩 Important Notes

Each channel is analyzed independently

Reactivity is calculated only for sites present in both files

Longer recordings improve accuracy

This scan does not segment time — the entire file is used