Bcia:section Ii Eeg

1. What is an electroencephalograph?

A device used to measure blood pressure.

Instrument that detects and amplifies the elecrical activity in the brain

An apparatus for recording sound waves.

A tool for analyzing DNA sequences.

An electroencephalograph specifically focuses on monitoring brain activity by detecting and amplifying electrical signals within the brain. It is not used for measuring blood pressure, analyzing DNA, or recording sound waves.

Explanation

An electroencephalograph specifically focuses on monitoring brain activity by detecting and amplifying electrical signals within the brain. It is not used for measuring blood pressure, analyzing DNA, or recording sound waves.

2. What does EEG measure?

Potential difference between pairs of samll electrodes on scalp using conductive medium
noninvasive and excellent temporal resolution

Blood pressure in the brain

Muscle activity in the limbs

Chemical composition of cerebrospinal fluid

EEG specifically measures the electrical activity in the brain by detecting the potential difference between electrodes placed on the scalp. It is commonly used to diagnose various neurological conditions and study brain function.

Explanation

EEG specifically measures the electrical activity in the brain by detecting the potential difference between electrodes placed on the scalp. It is commonly used to diagnose various neurological conditions and study brain function.

3. What does EEG measure in terms of frequencies?

Cycles per second
Hertz (Hz)
amplitude measured in micrvolts or millinths of a volt

Decibels

Wavelengths

Bits per second

EEG measures brain wave frequencies in cycles per second, also known as Hertz (Hz).

Explanation

EEG measures brain wave frequencies in cycles per second, also known as Hertz (Hz).

4. What are 6 reasons for using EEG?

2. EEG results can predict the weather accurately

1. mental states can be define
2. brain wave patterns correspond to common disorders
3. operant conditioning demonstrated alteration of brain wave patterns
4. change in brain wave frequency = change in behavior
5. brain maps distiquish psychiatric syndromes
6. using 19 electrodes demonstrates communication patterns

1. EEG can measure blood pressure in the brain

3. EEG can diagnose bone fractures in the body

5. What was one of the earliest works done by Sterman?

Birds have no effect on SMR levels, thus no impact on sensory input relayed to cortex or motor output.

Fish increase SMR, causing excessive sensory input relayed to cortex and hyperactive motor output.

Cats increase SMR. The increase found to reduction of sensory input relayed to cortex and reduction in motor output

Dogs decrease SMR, leading to increased sensory input relayed to cortex and increased motor output.

Sterman's early work focused on the effects of SMR in cats, specifically how it related to sensory input and motor output in the cortex.

Explanation

Sterman's early work focused on the effects of SMR in cats, specifically how it related to sensory input and motor output in the cortex.

6. What does a high theta and low beta pattern indicate?

Persons with high stress levels

Persons with ADD

Individuals with high creativity

People with excellent attention span

A high theta and low beta pattern is commonly associated with individuals diagnosed with Attention Deficit Disorder (ADD), as it reflects specific brainwave activity commonly seen in those with the condition.

Explanation

A high theta and low beta pattern is commonly associated with individuals diagnosed with Attention Deficit Disorder (ADD), as it reflects specific brainwave activity commonly seen in those with the condition.

7. Why is Roy E John's research important?

EEG results from Roy E John's research are inconsistent and unreliable.

Data base of brainmaps indicate EEG are stable over time and culture free. Can assist with medication/nfb protocols

Roy E John's research focuses on irrelevant topics not related to neuroscience.

There is no practical application for the findings in Roy E John's research.

Roy E John's research is significant as it has provided a database of brainmaps indicating that EEG data are stable over time and culture free. This information can help in developing medication and neurofeedback protocols for various neurological conditions.

Explanation

Roy E John's research is significant as it has provided a database of brainmaps indicating that EEG data are stable over time and culture free. This information can help in developing medication and neurofeedback protocols for various neurological conditions.

8. What does excessive alpha found above cingulate gyrus indicate?

ADHD

Depression

Schizophrenia

OCD
In cl. with central thea only 20% respond to SSRIs

Excessive alpha found above cingulate gyrus is typically associated with Obsessive-Compulsive Disorder (OCD). This abnormality in brain activity is a key feature in diagnosing OCD.

Explanation

Excessive alpha found above cingulate gyrus is typically associated with Obsessive-Compulsive Disorder (OCD). This abnormality in brain activity is a key feature in diagnosing OCD.

9. What is an important factor in achieving coherence?

Confuse and disorient

Train and normalize

Ignore and neglect

Randomize and shuffle

Coherence typically refers to the logical connection and consistency between ideas in a text or discourse. To achieve coherence, one must train themselves by practice and normalize their writing style to ensure clarity and consistency.

Explanation

Coherence typically refers to the logical connection and consistency between ideas in a text or discourse. To achieve coherence, one must train themselves by practice and normalize their writing style to ensure clarity and consistency.