Figure 1. Pulsatile luteinizing hormone secretion is tightly correlated with electrophysiological activity in the monkey mediobasal hypothalamus.

The relationship between luteinizing hormone (LH) “pulses”, observed in the peripheral circulation (open data points), and multiunit activity (MUA) (continuous trace) recorded in the mediobasal hypothalamus of two ovariectomized rhesus monkeys before (Panel A) and after (Panel B) anesthesia was induced with thiopental. Note the high-fidelity relationship between the two parameters regardless of frequency of pulsatile LH secretion. Reproduced from Wilson et al. ¹⁶ with permission of Karger Publishers. Copyright © (1984) Karger Publishers, Basel, Switzerland.