Echolocation calls and communication calls are controlled differentially in the brainstem of the bat Phyllostomus discolor

摘要: Echolocating bats emit vocalizations that can be classified either as echolocation calls or communication calls. Neural control of both types must govern the same pool motoneurons responsible for vocalizations. Electrical microstimulation in periaqueductal gray matter (PAG) elicits and calls, whereas stimulation paralemniscal area (PLA) induces only In PAG PLA, current thresholds triggering natural do not habituate to stimuli remain low even long periods, indicating these structures have relative direct access final common pathway vocalization. This study intended clarify whether are controlled differentially below level via separate vocal pathways before converging on used Both were probed simultaneously a single experimental approach. Two electrodes chronically implanted within order elicit Blockade ipsilateral PLA site with iontophoretically application glutamate antagonist kynurenic acid did impede elicited from PAG. However, blockade contralateral suppresses PAG-elicited but cases was reversible. The neural seems organized is an essential functional unit call descending share again