Detecting signs of dementia in EEG signal?

Can an EEG show signs of dementia?

The reduction in EEG microstate duration correlated with loss of cognitive function. Therefore, temporospatial analysis of the EEG record is a useful indicator of cortical dysfunction in dementia and correlates with the degree of cognitive impairment.

What EEG finding is specific in dementia?

The EEG findings, which may support a diagnosis of Alzheimer’s disease are slowing of alpha activity and an increase in slow frequency activity. 5 These findings may also differentiate dementing disorders from metabolic or toxic confusional states.

Does Alzheimer’s show on EEG?

Alzheimer’s disease (AD) is a neurodegenerative disorder that is characterized by cognitive deficits, problems in activities of daily living, and behavioral disturbances. Electroencephalogram (EEG) has been demonstrated as a reliable tool in dementia research and diagnosis.

Can EEG detect frontotemporal dementia?

Although diagnostic precision for Alzheimer’s disease (AD) approaches 90%, for Frontotemporal dementias (FTD) it has been less than 20%. Previous work has shown that AD patients have both focal and generalized slowing, while in FTD the EEG is normal.

Can an EEG detect Lewy body dementia?

Dementia with Lewy bodies (DLB) is clinically associated with dementia plus core clinical features including visual hallucinations, REM sleep behavior disorder, cognitive fluctuations, and parkinsonism. An abnormal electroencephalogram (EEG) is a supportive biomarker for DLB.

Can EEG detect encephalopathy?

Most importantly, EEG can differentiate between a true acute encephalopathy and epileptic states or psychiatric conditions. Although EEG is very sensitive in detecting an acute encephalopathy, it is not usually etiologically specific. The usefulness of EEG in chronic encephalopathy is less clear.

What is an EEK test?

An EEG is a test that detects abnormalities in your brain waves, or in the electrical activity of your brain. During the procedure, electrodes consisting of small metal discs with thin wires are pasted onto your scalp. The electrodes detect tiny electrical charges that result from the activity of your brain cells.

What do sharp waves on an EEG mean?

Spikes or sharp waves are terms commonly seen in EEG reports. If these happen only once in a while or at certain times of day, they may not mean anything. If they happen frequently or are found in specific areas of the brain, it could mean there is potentially an area of seizure activity nearby.

What are 10 conditions diagnosed with an EEG?

10 Conditions Diagnosed With an EEG

  • Seizure Disorders. The primary use of EEG is diagnosing epilepsy and other seizure disorders. …
  • Sleep Disorders. Sleep disorders range from insomnia to narcolepsy. …
  • Brain Tumors. There are many types of brain tumors. …
  • Brain Injury. …
  • Dementia. …
  • Brain Infections. …
  • Stroke. …
  • Attention Disorders.

What is frontal dementia?

Frontotemporal dementia (FTD), a common cause of dementia, is a group of disorders that occur when nerve cells in the frontal and temporal lobes of the brain are lost. This causes the lobes to shrink. FTD can affect behavior, personality, language, and movement.

What are some of the first symptoms noticed in frontal lobe dementia?


  • Increasingly inappropriate social behavior.
  • Loss of empathy and other interpersonal skills, such as having sensitivity to another’s feelings.
  • Lack of judgment.
  • Loss of inhibition.
  • Lack of interest (apathy), which can be mistaken for depression.

What are the early signs of frontotemporal dementia?

Early signs of frontotemporal dementia may involve the following symptoms:

  • Apathy or an unwillingness to talk.
  • Change in personality and mood, such as depression.
  • Lack of inhibition or lack of social tact.
  • Obsessive or repetitive behavior, such as compulsively shaving or collecting items.

What are the first signs of FTD?

Symptoms of neuromuscular disease or Parkinsonism (most often seen in patients with behavioral FTD) can include:

  • Weakness in the arms and legs.
  • Weakness in the muscles of speech, such as lips and tongue.
  • Difficulty swallowing.
  • Muscle jerks or spasms.
  • Stiffness of muscles and slowness of movement.
  • Tremor, or shaking.

What is Lewy body dementia symptoms?

Lewy body dementia signs and symptoms can include:

  • Visual hallucinations. …
  • Movement disorders. …
  • Poor regulation of body functions (autonomic nervous system). …
  • Cognitive problems. …
  • Sleep difficulties. …
  • Fluctuating attention. …
  • Depression. …
  • Apathy.

What is Sundowning behavior?

The term “sundowning” refers to a state of confusion occurring in the late afternoon and spanning into the night. Sundowning can cause a variety of behaviors, such as confusion, anxiety, aggression or ignoring directions. Sundowning can also lead to pacing or wandering.