TY - JOUR
T1 - Toward understanding the neurophysiological basis of peripersonal space
T2 - An EEG study on healthy individuals
AU - Naro, Antonino
AU - Calabrò, Rocco Salvatore
AU - Rosa, Gianluca La
AU - Andronaco, Veronica Agata
AU - Billeri, Luana
AU - Lauria, Paola
AU - Bramanti, Alessia
AU - Bramanti, Placido
PY - 2019/6
Y1 - 2019/6
N2 - The subcortical mechanisms subtending the sensorimotor processes related to the peripersonal space (PPS) have been well characterized, whereas less evidence is available concerning the cortical mechanisms. We investigated the theta, alpha and beta event-related spectral perturbations (ERSP) while holding the forearm in different positions into the PPS of the face. Fifty healthy individuals were subjected to EEG recording while being provided with median nerve electric stimulation at the wrist of the right hand held at different hand-to-face distances. Theta and beta rhythms were significantly perturbed depending on the hand-to-face distance, whereas alpha oscillations reflected a more general, non-specific oscillatory response to the motor task. The perturbation of theta and beta frequency bands may reflect the processes of top-down modulation overseeing the conscious spatiotemporal encoding of sensory-motor information within the PPS. In other words, such perturbation reflects the continuous update of the conscious internal representations of the PPS to build up a purposeful and reflexive motor response.
AB - The subcortical mechanisms subtending the sensorimotor processes related to the peripersonal space (PPS) have been well characterized, whereas less evidence is available concerning the cortical mechanisms. We investigated the theta, alpha and beta event-related spectral perturbations (ERSP) while holding the forearm in different positions into the PPS of the face. Fifty healthy individuals were subjected to EEG recording while being provided with median nerve electric stimulation at the wrist of the right hand held at different hand-to-face distances. Theta and beta rhythms were significantly perturbed depending on the hand-to-face distance, whereas alpha oscillations reflected a more general, non-specific oscillatory response to the motor task. The perturbation of theta and beta frequency bands may reflect the processes of top-down modulation overseeing the conscious spatiotemporal encoding of sensory-motor information within the PPS. In other words, such perturbation reflects the continuous update of the conscious internal representations of the PPS to build up a purposeful and reflexive motor response.
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U2 - 10.1371/journal.pone.0218675
DO - 10.1371/journal.pone.0218675
M3 - Article
C2 - 31233542
AN - SCOPUS:85067616266
VL - 14
JO - PLoS One
JF - PLoS One
SN - 1932-6203
IS - 6
M1 - e0218675
ER -