Related Experiment Video
Updated: Jan 20, 2026

Establishing a Device for Sleep Deprivation in Mice
Published on: September 22, 2023
fMRI and electroencephalographic evaluation of sleep deprivation in epilepsy patients: An observational study
Emanuele Cartella1, Simona De Salvo1, Lilla Bonanno1
1IRCCS Centro Neurolesi "Bonino Pulejo", Contrada Casazza, SS113, 98124 Messina, Italy.
Background:
Sleep deprivation (SD) is considered an important activation test to facilitate the visualization of electroencephalogram (EEG) epileptic abnormalities, in order to perform a correct diagnosis.
Objective:
The aim of this study was to evaluate the local functional activity in healthy controls (HC) subjects and left mesial temporal lobe epilepsy-hippocampal sclerosis patients, after a SD, by using functional Magnetic Resonance Imaging (fMRI) and EEG.
Materials And Methods:
We enrolled 22 healthy controls and 34 patients with a diagnosis of left mesial temporal lobe epilepsy-hippocampal sclerosis. Each participant underwent two examinations separately: an fMRI study using 3 T MRI to detect spontaneous activity during the RS-fMRI and an EEG.
Results:
The SD-EEG results showed the presence of epileptiform discharges predominantly in left fronto-centro-temporal areas. fMRI findings if compared to HC showed an increase of functional activity in some areas.
Discussion:
We showed that SD-EEG study confirmed a high specificity to assess a specific diagnosis. Therefore, the decrease of activity observed in DMN could be explain by a different amount of sleep/awake time during fMRI recording in the two groups or the interictal activity during fMRI acquisition. Our study highlighted alterated functional activity in SD cortical areas of epileptic patients if compared to HC.
Related Concept Videos
Insufficient Sleep and Sleep Deprivation
Sleep deprivation is a more severe form of sleep loss...
Observational Studies
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One...
Naturalistic Observations
Stages of Sleep
Before sleep begins, in wakefulness, the brain exhibits primarily beta waves, which are high in frequency and low in amplitude, indicating alertness...
Understanding Sleep
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
Sleep Apnea
The condition is more prevalent among...

