Functional Connectivity in Neurodegenerative Disorders: Alzheimer's Disease and Frontotemporal Dementia

Rozita Jalilianhasanpour, Elham Beheshtian, Farzaneh Ghazi Sherbaf, Sadaf Sahraian, Haris I. Sair

Research output: Contribution to journalReview articlepeer-review

Abstract

Neurodegenerative disorders are a growing cause of morbidity and mortality worldwide. Onset is typically insidious and clinical symptoms of behavioral change, memory loss, or cognitive dysfunction may not be evident early in the disease process. Efforts have been made to discover biomarkers that allow for earlier diagnosis of neurodegenerative disorders, to initiate treatment that may slow the course of clinical deterioration. Neuronal dysfunction occurs earlier than clinical symptoms manifest. Thus, assessment of neuronal function using functional brain imaging has been examined as a potential biomarker. While most early studies used task-functional magnetic resonance imaging (fMRI), with the more recent technique of resting-state fMRI, "intrinsic" relationships between brain regions or brain networks have been studied in greater detail in neurodegenerative disorders. In Alzheimer's disease, the most common neurodegenerative disorder, and frontotemporal dementia, another of the common dementias, specific brain networks may be particularly susceptible to dysfunction. In this review, we highlight the major findings of functional connectivity assessed by resting state fMRI in Alzheimer's disease and frontotemporal dementia.

Original languageEnglish (US)
Pages (from-to)317-324
Number of pages8
JournalTopics in Magnetic Resonance Imaging
Volume28
Issue number6
DOIs
StatePublished - Dec 1 2019

Keywords

  • Alzheimer's disease
  • connectivity
  • dementia
  • frontotemporal dementia
  • functional connectivity
  • functional magnetic resonance imaging
  • neurodegeneration
  • neurodegenerative disorders

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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