Electronics: Basic to clinical Karl E Misulis MD,PhD

Basic Electronics for Neurology Electricity and basic circuit theory Filters and amplifiers Digital signal analysis Displays Electrodes Artifacts and noise Electrical safety

Why do I need to know this? Large part of the clinical neurophysiology boards. Might be nice to understand how your equipment works. I make money from the sale of the definitive text… Essentials of Clinical Neurophysiology,

ABPN: Clinical neurophysiology Board certified in neurology, child neurology, or psychiatry Finished 1 year of ACGME-approved training in CN, not during residency. May be part time (at least 1/2 time) Certification: 5 hours Re-certification: 3 hours

ABPN: Clinical neurophysiology Core neurophysiology (18%) Basic and applied neurophysiology EEG (38%) Methods, Basic patterns, variants Clinical correlations EMG (38%) Methods, Basic patterns Clinical correlations Sleep (6%)

Should I take the EEG boards?

Basic electronics Overview of atomic physics Basic electrical devices Circuit theory Electrical equipment Patient - equipment interface

Overview of atomic physics Atoms Sub-atomic particles Electrons Protons Neutrons Orbitals and clouds

Attraction is the key to everything …

Atomic structure

Great myths in America … Lightening never strikes twice in the same place. Good things come to those who wait. Cutting taxes reduces the budget deficit. Anything is possible.

Probability … High probability Low probability Impossible

Conductors

Laws …

Important laws Do not offer to perform a consult. Do not ask your nurse out on a date. Do not discriminate against potential employees on the basis of race, color, creed, health condition, or competence.

Important laws Ohm's law Kirchoff's current law Kirchoff's voltage law

Ohm's law

Kirchoff's laws: A. Current & B. Voltage

Kirchoff's current law

Kirchoff's laws

Kirchoff's voltage law

Resistors …

Resistor theory Function of resistors Resistors in series Resistors in parallel

Theory of resistors

Series resistances

Theory of resistors

Parallel resistances

Capacitors …

Capacitors Function of capacitors Store energy as a separation of charge Capacitative current Effect of capacitors on circuits Types of capacitors Component Contaminant

Capacitors

Inductors Function of inductor Effect of inductor on current flow Types of inductors Component Contaminant

Inductors

Semiconductors …

Semiconductors Construction Function of semiconductors "semi-conduct" Junction effects Use in diodes and transistors

Semiconductors

Diodes

Rolling on to the end …

Summary … Atomic theory governs charge and current properties in biologic and physical circuits. There are some basic principles which you must know for the ABPN-CN boards. Resistor and capacitor theory Ohm's law & Kirchoff's laws Filter theory Knowledge of basic electronics is more than just of academic importance.