Abstract
This study examined the coupling between visual information and body sway in patients with Parkinson's disease (PD) compared with healthy controls. Postural control performance was compared between 14 patients with PD (age: 69.6 ± 8.8 years - stages 1–3 of the Hoehn and Yahr scale) and 14 healthy control participants (age: 68.6 ± 3.0 years). Participants stood upright in a moving room that remained motionless or continuously oscillated in the anterior-posterior direction. Ten trials were performed in the following conditions: no movement of the room (1 trial) and with the room moving at frequencies of 0.1, 0.17, and 0.5 Hz (3 trials each frequency). Body sway and moving room displacement were recorded. The results indicated that patients with PD displayed larger body sway magnitude in the stationary room condition. Body sway of patients with PD was induced by visual manipulation in all three visual stimulus frequencies, but body sway of patients with PD was less coherent compared to that of the control participants. However, no difference was observed in the visual-body sway coupling structure. These results indicate that patients with PD can unconsciously couple body sway to visual information in order to control postural sway in a similar manner to healthy participants with intact visual-motor coupling for posture control. However, this coupling is marked by greater variability, indicating that people with PD have a motor system with greater inherent noise leading to a more varied behavior.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 47-52 |
| Number of pages | 6 |
| Journal | Neuroscience Letters |
| Volume | 686 |
| DOIs | |
| State | Published - Nov 1 2018 |
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Keywords
- Parkinson's disease
- Posture
- Sensorimotor coupling
- Vision
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Parkinson's disease does not alter automatic visual-motor coupling in postural control. / Cruz, Caio Ferraz; Piemonte, Maria Elisa Pimentel; Okai-Nobrega, Líria Akie; Okamoto, Erika; Fortaleza, Ana Claudia de Souza; Mancini, Martina; Horak, Fay; Barela, José Angelo.
In: Neuroscience Letters, Vol. 686, 01.11.2018, p. 47-52.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Parkinson's disease does not alter automatic visual-motor coupling in postural control
AU - Cruz, Caio Ferraz
AU - Piemonte, Maria Elisa Pimentel
AU - Okai-Nobrega, Líria Akie
AU - Okamoto, Erika
AU - Fortaleza, Ana Claudia de Souza
AU - Mancini, Martina
AU - Horak, Fay
AU - Barela, José Angelo
PY - 2018/11/1
Y1 - 2018/11/1
N2 - This study examined the coupling between visual information and body sway in patients with Parkinson's disease (PD) compared with healthy controls. Postural control performance was compared between 14 patients with PD (age: 69.6 ± 8.8 years - stages 1–3 of the Hoehn and Yahr scale) and 14 healthy control participants (age: 68.6 ± 3.0 years). Participants stood upright in a moving room that remained motionless or continuously oscillated in the anterior-posterior direction. Ten trials were performed in the following conditions: no movement of the room (1 trial) and with the room moving at frequencies of 0.1, 0.17, and 0.5 Hz (3 trials each frequency). Body sway and moving room displacement were recorded. The results indicated that patients with PD displayed larger body sway magnitude in the stationary room condition. Body sway of patients with PD was induced by visual manipulation in all three visual stimulus frequencies, but body sway of patients with PD was less coherent compared to that of the control participants. However, no difference was observed in the visual-body sway coupling structure. These results indicate that patients with PD can unconsciously couple body sway to visual information in order to control postural sway in a similar manner to healthy participants with intact visual-motor coupling for posture control. However, this coupling is marked by greater variability, indicating that people with PD have a motor system with greater inherent noise leading to a more varied behavior.
AB - This study examined the coupling between visual information and body sway in patients with Parkinson's disease (PD) compared with healthy controls. Postural control performance was compared between 14 patients with PD (age: 69.6 ± 8.8 years - stages 1–3 of the Hoehn and Yahr scale) and 14 healthy control participants (age: 68.6 ± 3.0 years). Participants stood upright in a moving room that remained motionless or continuously oscillated in the anterior-posterior direction. Ten trials were performed in the following conditions: no movement of the room (1 trial) and with the room moving at frequencies of 0.1, 0.17, and 0.5 Hz (3 trials each frequency). Body sway and moving room displacement were recorded. The results indicated that patients with PD displayed larger body sway magnitude in the stationary room condition. Body sway of patients with PD was induced by visual manipulation in all three visual stimulus frequencies, but body sway of patients with PD was less coherent compared to that of the control participants. However, no difference was observed in the visual-body sway coupling structure. These results indicate that patients with PD can unconsciously couple body sway to visual information in order to control postural sway in a similar manner to healthy participants with intact visual-motor coupling for posture control. However, this coupling is marked by greater variability, indicating that people with PD have a motor system with greater inherent noise leading to a more varied behavior.
KW - Parkinson's disease
KW - Posture
KW - Sensorimotor coupling
KW - Vision
UR - http://www.scopus.com/inward/record.url?scp=85052949309&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85052949309&partnerID=8YFLogxK
U2 - 10.1016/j.neulet.2018.08.050
DO - 10.1016/j.neulet.2018.08.050
M3 - Article
VL - 686
SP - 47
EP - 52
JO - Neuroscience Letters
JF - Neuroscience Letters
SN - 0304-3940
ER -