EEG and Biofeedback Concepts

Flashcards covering key concepts related to EEG rhythms, biofeedback, and neurofeedback based on lecture notes.

When neurons depolarize _______.

This makes the neurons more _______ inside.

Which structure interacts with the cortex to produce cortical EEG rhythms?

Thalamus.

What dominant frequency would you expect in the EEG of a healthy awake adult?

At least 13 Hz.

An axon hillock must typically become ______ more positive than at rest to trigger an action potential.

10-20 mV.

Which rhythm is associated with inattentive drowsiness?

Theta.

Which EEG artifact is usually the strongest source of contamination during EEG recording?

Sixty-Hz artifact.

Which filter only suppresses slow-wave activity?

Low frequency.

Which bandpass can be used to measure low alpha EEG activity?

8-10 Hz.

What does the term 'derivation' refer to in EEG?

The combination of electrodes used in a single amplifier channel.

How effective is neurofeedback for ADHD?

Level 5 - efficacious and specific.

What does alpha asymmetry neurofeedback aim to increase in depression treatment?

Activation of the left prefrontal cortex with respect to the right.

How does high-beta activity affect athletic performance?

It is linked to stress and can hurt smooth, automatic performance.

What is an epoch in EEG?

A time segment of EEG data selected for analysis.

What does 'F' denote in EEG electrode labeling?

Frontal site.

What is the goal of z-score training in neurofeedback?

To train abnormal EEG values back toward the typical range.

In the 10–20 system of electrode placement, which numbers are on the left-hand side?

Odd numbers.

What effect does sadness have on recall?

It can make memory more detailed and accurate.

What do beta and alpha frequency bands represent during EEG?

Beta represents alert activity, while alpha indicates idling or drowsy states.

What is the primary symptom of traumatic brain injury?

Slowed information processing speed.

What is the estimated percentage of major depressive cases adequately treated by interventions?

About 20%.

What does autogenic biofeedback combine with temperature biofeedback?

Autogenic phrases.