Macaque monkeys were trained to pull a lever, which opened a door allowing them to retrieve a food reward. In two animals, after training we made a unilateral lesion of the pyramidal tract by thermocoagulation, and allowed recovery, which reached plateau after hmlsrc">hImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S1388245715009748&_mathId=si1.gif&_user=111111111&_pii=S1388245715009748&_rdoc=1&_issn=13882457&md5=f21d0c4f4b278f7b01988edfa505857d" title="Click to view the MathML source">∼hContainer hidden">hCode">
The recovery differed between the two lesioned monkeys: one was moderately impaired and could still take the food with the paretic hand, whilst the second lost the ability to perform precision grip but was still able to pull a lever. Recordings were then made of local field potential (LFP) from the reticular formation and EMG. Recordings from one unlesioned animal served as a control.
<h4 id="absSec_4">Conclusionsh4>In the control and in the less impaired monkeys reticulomuscular coherence was observed in the beta band (20–30 Hz); this was not seen in the more impaired monkey. By contrast, the more impaired animal showed hmlsrc">hImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S1388245715009748&_mathId=si1.gif&_user=111111111&_pii=S1388245715009748&_rdoc=1&_issn=13882457&md5=f21d0c4f4b278f7b01988edfa505857d" title="Click to view the MathML source">∼hContainer hidden">hCode">