Publications by authors named "S P M Peiris"

Article Synopsis
  • The olfactory nerve (cranial nerve I) primarily projects to the same side of the brain, but how it processes smells can vary depending on the task and type of odor stimulus.
  • A study involving 20 young adults with normal smell used fMRI to observe brain activity while participants experienced scents through one nostril, both passively and actively.
  • Results showed that, regardless of nostril and stimulation type, both primary and secondary brain areas related to smell were activated symmetrically, indicating that pure odors are processed bilaterally in the absence of cognitive demands.
View Article and Find Full Text PDF

Several risk factors contribute to the development of Alzheimer's disease (AD), including genetics, metabolic health, cardiovascular history, and diet. It has been observed that women appear to face a higher risk of developing AD. Among the various hypotheses surrounding the gender disparity in AD, one pertains to the potential neuroprotective properties of estrogen.

View Article and Find Full Text PDF

Background And Purpose: Preferences can be developed for, or against, specific brands and services. Using two functional magnetic resonance imaging (fMRI) experiments, this study investigated two dissociable aspects of reward processing, craving and liking, in chocolate lovers. The goal was to further delineate the neural basis supporting branding effects using familiar chocolate (FC) and unfamiliar chocolate (UC) brand images.

View Article and Find Full Text PDF

Dengue poses a significant and multifaceted public health challenge in Sri Lanka, encompassing both preventive and curative aspects. Accurate dengue incidence forecasting is pivotal for effective surveillance and disease control. To address this, we developed an Autoregressive Integrated Moving Average (ARIMA) model tailored for predicting weekly dengue cases in the Colombo district.

View Article and Find Full Text PDF

Bowel dysfunction in cancer is a significant and challenging issue for both clinicians and patients. As cancer survival improves, the impact of gastrointestinal symptoms on quality of life is of ever-increasing relevance. This review aims to provide an overview of the common gastrointestinal complaints seen in cancer sufferers and discuss the principles of management and up to date treatment options available.

View Article and Find Full Text PDF