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The subthalamic nucleus (STN) plays a pivotal role in normal and abnormal motor function. We used patch pipettes to study effects of 5-HT on synaptic currents evoked in STN neurons by focal electrical stimulation of rat brain slices. 5-HT (10 μM) reduced glutamate-mediated excitatory postsynaptic currents (EPSCs) by 35±4%. However, a much higher concentration of 5-HT (100 μM) was required to inhibit...
Whole-cell patch clamp recordings were made from the subthalamic nucleus in rat brain slice preparations to examine the effect of adenosine on inhibitory and excitatory synaptic transmission. Adenosine reversibly inhibited both GABA-mediated inhibitory and glutamate-mediated excitatory postsynaptic currents. Adenosine at 100 μM reduced the amplitude of inhibitory and excitatory postsynaptic currents...
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