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The ewe's learning of her lamb's odor involves synaptic changes within the olfactory bulb. Electrophysiological recordings from olfactory bulb mitral cells of a recently lambed ewe show these cells respond preferentially to general lamb odors, and a subset respond preferentially to the odor of a ewe's own lamb. [6]
The accessory olfactory bulb resides on the dorsal-posterior region of the main olfactory bulb and forms a parallel pathway. Destruction of the olfactory bulb results in ipsilateral anosmia, while irritative lesions of the uncus can result in olfactory and gustatory hallucinations. Flow of olfactory information from receptors to glomeruli layer
Sheep form olfactory recognition memory for their lambs within 2–4 hours of giving birth, which causes the mother to subsequently reject advances from unfamiliar lambs and scents. [21] This bond is thought to be enhanced by olfactory cues that cause enhanced transmission across synapses of the olfactory bulb. [21]
Unlike the main olfactory bulb that sends neuronal signals to the olfactory cortex, the VNO sends neuronal signals to the accessory olfactory bulb and then to the amygdala, BNST, and ultimately hypothalamus. Since the hypothalamus is a major neuroendocrine center (affecting aspects of reproductive physiology and behavior as well as other ...
Sometimes called the olfactory cortex, olfactory lobe or paleopallium, piriform cortical regions are present in the brains of amphibians, reptiles and mammals. The piriform cortex is among three areas that emerge in the telencephalon of amphibians, situated caudally to a dorsal area, which is caudal to a hippocampal area.
The new study, published Monday in the journal JAMA Network Open, found microplastics in the olfactory bulbs of eight of 15 cadavers that ranged in size from 5.5 micrometers, or 0.000217 of an ...
These ORNs then project their axons to the olfactory bulb. In the olfactory bulb, the ORNs synapse with termination in the glomeruli. [6] Each glomerulus receives input from olfactory receptor neurons expressing only one type of olfactory receptor. The glomerular activation patterns within the olfactory bulb are thought to represent the quality ...
A Long Island livestock sanctuary faces 112 counts of animal neglect for allegedly depriving dozens of animals of food, water, and shelter, according to prosecutors. Investigators visited Double D ...