Specificity of auditory evoked potentials from rat hypothalamus: differential recording by lateral and ventromedial electrodes.

摘要: Abstract Evoked potentials recorded from ventromedial nucleus (VMH) and lateral area (LHA) of the hypothalamus were studied in freely moving rats with respect to specificity components areas peripheral stimuli utilized. This study attempts circumvent some methodological problems contamination data origin by comparing monopolar differential recordings made VMH LHA, accepted as being involved food-intake behavior. Of stable components, complex 15–20 ms latency was evaluated extra-hypothalamic origin. Meanwhile, those 25-ms (positive) 40-ms (negative) average peak latencies considered specific areas. Hypothalamic responses appeared not be stimulus modality, indicating convergence different sensory modalities on Hunger satiety influence amplitude specified similarly, providing evidence for reciprocal relation stated dual center hypothesis between LHA.