Thank you for taking the time to post these great videos. Could you answer two brief questions, please? I read in the book `Neurological Differential Diagnosis, A Prioritised Approach`. Bhidayasiri, Waters and Giza, (p 463), what looks to be a summary of what the EEG is registering: EEG Normal or nonpathological EEG 1) The rhythmic EEG activity is due to intrinsic membrane properties of various groups of neurons (summated excitatory and inhibitory postsynaptic potentials; EPSPs and IPSPs), the synaptic connections of these neurons, and thalamocortical inputs that lead to synchronisation of this activity. 2) There are basically four EEG frequency ranges. No individual band is normal or abnormal by definition. All are interpreted according to the topographic location, age and conscious state of the patient. Do you feel that the description at `1` is complete? And, would you add any other factors to `2`? If you have the time I would be very interested to hear your ideas, Mr Moeller. Pete
00:02 Review of important aspects of interpretation of normal awake EEG 02:07 Proper EEG recording settings are crucial for accurate interpretation. 04:17 EEG analysis of Alpha rhythm with eye movements 06:18 Switching to average reference montage for better amplitude analysis 08:17 The Alpha rhythm has specific characteristics in EEG recordings. 10:14 Normal awake EEG includes alpha frequency changes and common variants. 12:30 Lambda waves are electro positive and blocked by eye closure 14:42 MU rhythm is a normal awake EEG pattern resembling the Greek letter 'mu'
00:02 Understanding technical issues in EEG is crucial for accurate interpretation. 01:57 EEG recordings capture different frequency bands such as alpha and beta waves. 03:39 EEG filters affect signal amplitude at different frequency ranges. 05:23 Adjust low and high frequency filters in EEG 07:07 High-frequency filtering affects EEG measurements 08:45 High impedance electrodes are more susceptible to 60 Hertz artifact. 10:27 Impacts of knotch filter and sensitivity setting on EEG recordings 12:15 Changes in sensitivity and time base can affect EEG interpretation.
Please observe that your description of bipolar montage in blue ( transverse) does not go with the EEG tracing (longitudinal). Otherwise superb description. Thank you
How about 10-16s wicket-like biphasic waves that come after continuous slowing? Things became complicated because it came intermittently, the patient has been given midazolam prior to EEG and has been diagnosed epilepsy before.
This was very helpful. I am an educator and the way you explain this information allowed me to remember how to break an EEG DOWN and remember the terms. Could you create a RU-vid video on medications and their effects on an EEG?
I really admire your work and the simplistic way in which you explain, Mr. Moeller! I am 18, a maths student, but I am a polyphasic sleeper too (currently E3, trying SPAMAYL, I know it's harmful but I don't seem to get enough time from my clothes brand and learning programming, etc :). I am currently doing some trial-and-error and taking several notes of my naps and sleep sessions under various conditions and climates, noting the difference between a monophaser and a polyphaser. Although nobody wants to give me their "normal" monophasic brain to for EEGs, sometimes I have to bribe my own family members haha. I use openBCI by the way. I just wanted to let you know that you have been of great help to me! Thank you so much! I think I will binge watch rest of your videos hehe. Goodbye. Take care.
I know tbe focus was PDs but the part where you broke down spike, sharp, sharp contoured and blunt just made ny life so much easier. I was having so much trouble describing my waves
