Adding the EEG Quality signal link and change EEG electrode placement image.

Author: PayalLakra

hardware/bioamp/bioamp-exg-pill/index.rst

@@ -430,7 +430,7 @@ We have 2 options to measure the EEG signals, either using the gel electrodes or
 
 - **Using gel electrodes to record from prefrontal cortex part of brain:**
 
-.. figure:: media/eeg.*
+.. figure:: media/eeg_placement.*
     :align: center
 
 1. Connect the BioAmp cable to gel electrodes.
@@ -484,6 +484,10 @@ The signals that you can see on the screen right now are originating from prefro
 
 You have placed the electrodes on the forehead (Fp1 & Fp2), the BioAmp EXG Pill is amplifying those signals so that we can detect it and finally sending it to the ADC (Analog to Digital Convertor) of your Arduino Uno and the signals are being visualized in Chords Web.
 
+.. tip::
+
+   To ensure you're recording a high-quality signal, refer to the detailed guide here: :ref:`Troubleshooting EEG Signal Quality <recording_quality_eeg>`.
+
 We hope everything is clear now and you understand how the signals are propagating from your brain to the screen of the laptop.
 
 Glimpses of previous versions

hardware/bioamp/bioamp-exg-pill/media/eeg.png

@@ -367,6 +367,10 @@ A GUI window will appear, displaying the real-time EEG signal along with the cal
 
    EEG with FFT
 
+.. tip::
+
+   To ensure you're recording a high-quality signal, refer to the detailed guide here: :ref:`Troubleshooting EEG Signal Quality <recording_quality_eeg>`.
+
 5. `EEG Tug of War Game`
 ========================
 

hardware/bioamp/bioamp-exg-pill/media/eeg_placement.png

@@ -199,6 +199,10 @@ EEG records the electrical activity of the brain and is commonly used for diagno
 
    EEG Signal Example
 
+.. tip::
+
+   To ensure you're recording a high-quality signal, refer to the detailed guide here: :ref:`Troubleshooting EEG Signal Quality <recording_quality_eeg>`.
+
 Visualizing EOG (Electrooculography) signals
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