Publications by authors named "Lisa H Geddes"
Article Synopsis
- The steroid hormone 20-hydroxyecdysone (20-E) negatively affects honeybees' ability to learn aversive odors associated with punishment, although it doesn't hinder their learning of scents linked to food rewards.
- 20-E influences the expression of certain amine-receptor genes in the honeybee brain, particularly affecting dopamine receptor genes linked to memory formation.
- The study suggests a crucial role of the putative dopamine/ecdysone receptor, AmGPCR19, in the hormonal regulation of associative olfactory learning in honeybees, especially during their early development stages.
For decades it has been speculated that there is a close association between the vestibular system and spatial memories constructed by areas of the brain such as the hippocampus. While many animal studies have been conducted which support this relationship, only in the last 10 years have detailed quantitative studies been carried out in patients with vestibular disorders. The majority of these studies suggest that complete bilateral vestibular loss results in spatial memory deficits that are not simply due to vestibular reflex dysfunction, while the effects of unilateral vestibular damage are more complex and subtle.
View Article and Find Full Text PDFPeripheral modulation of worker bee responses to queen mandibular pheromone.
Proc Natl Acad Sci U S A
December 2009
It is generally accepted that young worker bees (Apis mellifera L.) are highly attracted to queen mandibular pheromone (QMP). Our results challenge this widely held view.
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