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| ID | Type | Description | Link |
|---|---|---|---|
| AOL2012 | Other Identifier | Toulouse University Hospital |
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Recruitment
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| Name | Class |
|---|---|
| Grenoble Institut des Neurosciences | OTHER |
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To compare the electrical activity of SubThalamic Nuclei (STN), by mean of local field potentials recordings, during the phasic behaviours of RBD with the electrical activity recorded at this level during the execution of voluntary movements during the "off" and the "on" phases in patients with RBD secondary to PD.
Patient with severe Parkinson's disease (PD) with motor fluctuations are akinetic and bradykinetic during the "off" phases. Their motor status dramatically improves during "on" phases, due to the effect of dopaminergic agents.
In the off phases, the plasmatic levels of dopaminergic drugs are the lowest. The plasmatic levels of dopaminergic drugs are also very low during nocturnal sleep.
Nevertheless, PD patients may show vigorous and rapid movements during REM Behaviour Disorder (RBD). Thirty-three to 46% of the patients with PD have RBD.
Akinesia and bradykinesia are the consequence of a hyperactivity of the SubThalamic Nuclei (STN). The electrophysiological correlate of this hyperactivity causing akinesia and bradykinesia is represented by STN beta activity, recorded by local field potentials.
STN beta activity is not present during the execution of a voluntary movement at an "on" phase. Levodopa therapy, which can revert akinesia and bradykinesia, also suppress STN beta activity in PD patients The STN is the surgical target for Deep Brain Stimulation (DBS) of the basal ganglia to improve the motor symptoms of PD.
The STN has bilateral connections with the laterodorsal nucleus/pedunculopontine tegmentum (LDT/PPN), a key structure for REM sleep regulation.
The investigators hypothesize that during the execution of the phasic motor behaviours of RBD the pattern of discharge of STN differs from the one observed during voluntary movements in the "off" phase, in PD patients. In other terms, we expect the STN beta activity to disappear during the execution of phasic motor behaviors of RBD.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Synchronised video-polysomnography | Experimental |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Synchronised video-polysomnography | Other | We will record the electrical activity of the STN (local field potentials) during the 2 consecutive nights following the implantation of the electrodes in the STN for DBS. In this period, the deep brain stimulator will not yet be connected to the intracranial electrodes. The intracranial EEG signal from the STN will be synchronised with the scalp EEG and other video-polysomnographic parameters. The STN recordings during the phasic movements of RBD will be compared to the recordings obtained at the same level during a motor task. |
| Measure | Description | Time Frame |
|---|---|---|
| STN 8-30 Hz mean power | Difference of the mean power of the 8-30 Hz frequency band at the NST during the phasic movements of TCSP and during the execution voluntary movements in the "off" phase. | Outcome measure is assessed during the 2 nights and the two days following the implantation of the electrode in the STN. |
| Measure | Description | Time Frame |
|---|---|---|
| Difference of the mean power of the 8-13 Hz, 14-30 Hz and 60-90 Hz frequency bands at the NST during the phasic movements of TCSP and during the execution voluntary movements in the "off" phase. | Outcome measures are assessed at days 2 and 3 and nights 1 and 2. | |
| Difference of the mean power of the 8-30 Hz and 60-90 Hz frequency bands at the NST during the phasic movements of TCSP and during the execution voluntary movements in the "on" phase. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Pietro-Luca RATTI, MD | University Hospital, Toulouse | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital of Purpan | Toulouse | Midi-Pyrénées | 31059 | France | ||
| University Hospital of Rangueil |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| Background | AASM (2005). International classification of sleep disorders, 2nd ed.: Diagnostic and coding manual. Westchester, IL, American Academy of Sleep Medicine. | ||
| 18490619 | Background | Benarroch EE. Subthalamic nucleus and its connections: Anatomic substrate for the network effects of deep brain stimulation. Neurology. 2008 May 20;70(21):1991-5. doi: 10.1212/01.wnl.0000313022.39329.65. No abstract available. | |
| 17412731 |
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| ID | Term |
|---|---|
| D010300 | Parkinson Disease |
| ID | Term |
|---|---|
| D020734 | Parkinsonian Disorders |
| D001480 | Basal Ganglia Diseases |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
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| Outcome measures are assessed at days 2 and 3 and nights 1 and 2. |
| Frequency spectrum at NST REM sleep without atonia and REM sleep with atonia. | Outcome measures are assessed at days 2 and 3 and nights 1 and 2. |
| Frequency spectrum at the NST during non REM sleep (N1, N2 and N3 stages), REM sleep (R) and nocturnal wake. | Outcome measures are assessed at days 2 and 3 and nights 1 and 2 |
| Toulouse |
| Midi-Pyrénées |
| 31059 |
| France |
| Background |
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| 16029963 | Background | Brown P, Williams D. Basal ganglia local field potential activity: character and functional significance in the human. Clin Neurophysiol. 2005 Nov;116(11):2510-9. doi: 10.1016/j.clinph.2005.05.009. Epub 2005 Jul 18. |
| Background | Buot, A., M. L. Welter, et al. (2012). |
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| Background | Fumagalli, M., G. Giannicola, et al. (2011). |
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| Background | Iber, C., S. Ancoli-Israel, et al. (2007). The AASM Manual for the Scoring of Sleep and Associated Events. Rules, Terminology and Technical Specifications. Westchester, IL, American Academy of Sleep Medicine. |
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| D009422 | Nervous System Diseases |
| D009069 | Movement Disorders |
| D000080874 | Synucleinopathies |
| D019636 | Neurodegenerative Diseases |