Comparisons between responses of LHb PA neurons to the single-pulse stimuli of respective dopaminergic structures.

Abstract

<p>(a) The latency to onset of the cessation induced by the SNpc stimulus is notably longer than that induced by the VTA stimulus. (b) The duration of cessation in firing of PA neurons in response to the SNpc stimuli seems much more marked than the one in response to the VTA stimuli. Black asterisks indicate a significant difference (<i>P</i><0.05). (c, d) Average activity of LHb PA neurons during single-pulse stimulation of the VTA (filled rhombus, n = 17) and the SNpc (open rhombus, n = 20), respectively. Single (<i>P</i><0.005) and double black asterisks (<i>P</i><0.0001) indicate a marked firing suppression compared with baseline (0 ms to 100 ms). Error bars indicate SEM.</p