Comment on "Movement intention after parietal cortex stimulation in humans".
نویسندگان
چکیده
Desmurget et al. (Reports, 8 May 2009, p. 811) applied direct electrical stimulation (DES) to the human cortex to study the origin of movement intention. Their interpretation assumed that DES causes cortical activation, whereas it is possible that it actually evokes deactivation. The lack of certain knowledge about the true effects of DES limits its use for validation of cognitive models.
منابع مشابه
Movement intention after parietal cortex stimulation in humans.
Parietal and premotor cortex regions are serious contenders for bringing motor intentions and motor responses into awareness. We used electrical stimulation in seven patients undergoing awake brain surgery. Stimulating the right inferior parietal regions triggered a strong intention and desire to move the contralateral hand, arm, or foot, whereas stimulating the left inferior parietal region pr...
متن کاملResponse to Comment on “Movement Intention After Parietal Cortex Stimulation in Humans”
We used direct electrical stimulation (DES) to investigate the origin of motor intentions in the brain (1). Karnath et al. (2) argue that the net effect of electrical stimulation on brain activity is very hard to determine and that this technique can lead to either an increase (activation) or a decrease (inhibition) of neural activity. Also, irrespective of its local effects, it can involve the...
متن کاملTHE EFFECT OF POSTERIOR CEREBRAL PULMONARY DIRECT ELECTRICAL STIMULATION (TDCS) ON IMPROVING SPATIAL, VISUAL, AND VERBAL PERCEPTUAL ABILITIES
Background & Aims: Direct electrical stimulation of the brain is a therapeutic technique that can be effective in improving visual, verbal, and spatial perception. The present study investigated the effect of direct electrical stimulation (tDCS) of the posterior parietal cortex on improving spatial, visual, and verbal perceptual abilities. Materials & Methods: In this quasi-experimental study,...
متن کاملOnline control of hand trajectory and evolution of motor intention in the parietofrontal system.
The frontal mechanisms of motor intention were studied in dorsal premotor and motor cortex of monkeys making direct reaches to visual targets and online corrections of hand trajectory, whenever a change of the target's location occurred. This study and our previous one of parietal cortex (Archambault et al., 2009) provide a picture on the evolution of motor intention and online control of movem...
متن کاملHemispheric asymmetry in memory-guided pointing during single-pulse transcranial magnetic stimulation of human parietal cortex.
Dorsal posterior parietal cortex (PPC) has been implicated through single-unit recordings, neuroimaging data, and studies of brain-damaged humans in the spatial guidance of reaching and pointing movements. The present study examines the causal effect of single-pulse transcranial magnetic stimulation (TMS) over the left and right dorsal posterior parietal cortex during a memory-guided "reach-to-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Science
دوره 327 5970 شماره
صفحات -
تاریخ انتشار 2010