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Questions and Answers
Which electroencephalogram (EEG) pattern is least likely to be observed in an individual acutely intoxicated with a high dose of opioids?
Which electroencephalogram (EEG) pattern is least likely to be observed in an individual acutely intoxicated with a high dose of opioids?
- Increased alpha activity (correct)
- Increased voltage of delta waves
- Predominance of slow waves
- Increased voltage of theta waves
A patient presents with anxiety and is prescribed a medication that, upon EEG assessment, shows a marked increase in beta activity. Which of the following medications is the most likely cause?
A patient presents with anxiety and is prescribed a medication that, upon EEG assessment, shows a marked increase in beta activity. Which of the following medications is the most likely cause?
- An antidepressant with minimal sedative effects
- An antipsychotic medication for psychosis
- A benzodiazepine for anxiety (correct)
- An opioid analgesic for chronic pain
An individual undergoing detoxification from chronic alcohol abuse exhibits tremors, anxiety, and seizures. Which EEG finding would be most consistent with this clinical presentation?
An individual undergoing detoxification from chronic alcohol abuse exhibits tremors, anxiety, and seizures. Which EEG finding would be most consistent with this clinical presentation?
- Increased beta activity
- Predominance of delta waves
- Generalized paroxysmal activity with spike discharges (correct)
- Increased alpha activity
A researcher is studying the effects of different psychoactive substances on brain activity using EEG. Which of the following EEG patterns would be most consistent with the ingestion of marijuana?
A researcher is studying the effects of different psychoactive substances on brain activity using EEG. Which of the following EEG patterns would be most consistent with the ingestion of marijuana?
A patient with a history of anxiety and insomnia has been self-medicating with high doses of a particular drug. An EEG reveals increased beta activity. Which of the following substances is the patient most likely abusing?
A patient with a history of anxiety and insomnia has been self-medicating with high doses of a particular drug. An EEG reveals increased beta activity. Which of the following substances is the patient most likely abusing?
A polysomnography technician observes increased theta activity during a patient's sleep study. Considering the effects of common substances on EEG patterns, which substance is least likely to contribute to this finding?
A polysomnography technician observes increased theta activity during a patient's sleep study. Considering the effects of common substances on EEG patterns, which substance is least likely to contribute to this finding?
In a comparative study of EEG changes induced by various substances, researchers noted that one substance caused a significant decrease in alpha activity along with an increase in slower wave frequencies. Which substance is most consistent with these observed EEG changes?
In a comparative study of EEG changes induced by various substances, researchers noted that one substance caused a significant decrease in alpha activity along with an increase in slower wave frequencies. Which substance is most consistent with these observed EEG changes?
A patient undergoing withdrawal from a substance exhibits generalized paroxysmal activity and spike discharges on EEG. This pattern is most likely associated with withdrawal from which of the following substances?
A patient undergoing withdrawal from a substance exhibits generalized paroxysmal activity and spike discharges on EEG. This pattern is most likely associated with withdrawal from which of the following substances?
Which substance is most likely to cause an increased alpha activity in the frontal area of the brain?
Which substance is most likely to cause an increased alpha activity in the frontal area of the brain?
A researcher is investigating the EEG patterns of individuals under the influence of different substances. Which of the following findings would least align with the known effects of benzodiazepines?
A researcher is investigating the EEG patterns of individuals under the influence of different substances. Which of the following findings would least align with the known effects of benzodiazepines?
Flashcards
Opioid EEG Effects
Opioid EEG Effects
Opioids decrease alpha activity and increase the voltage of theta and delta waves on an EEG. Overdose can show slow waves.
Benzodiazepine EEG Effects
Benzodiazepine EEG Effects
Benzodiazepines increase beta activity on an EEG.
Alcohol EEG Effects
Alcohol EEG Effects
Alcohol decreases alpha activity and increases theta activity on an EEG.
Barbiturate EEG Effects
Barbiturate EEG Effects
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Marijuana EEG Effects
Marijuana EEG Effects
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Study Notes
- Various drugs can induce distinct changes in EEG patterns.
Opioids
- Leads to decreased alpha activity.
- Increases the voltage of theta and delta waves.
- In overdose scenarios, slow waves may be observed.
Benzodiazepines
- Leads to increased beta activity.
Alcohol
- Decreases alpha activity.
- Increases theta activity.
Barbiturates
- Leads to increased beta activity.
- Withdrawal stages can cause generalised paroxysmal activity and spike discharges.
Marijuana
- Increases alpha activity, particularly in the frontal regions of the brain.
- Causes overall slowing of alpha activity.
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