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Browsing by Issue Date, starting with "2021-03-18"

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  • The impact of structural changes on sound pressure levels in a neonatal intensive care unit
    Publication . Alberto Alves Carvalhais, Carlos; Rodrigues, Celia; Xavier, Ana; Vieira Da Silva, Manuela; Santos, Joana
    The design of neonatal intensive care units (NICU) influences both patient safety and clinical outcomes as well as the acoustic conditions. In NICU exposure to sound pressure levels above the recommended can affect both neonates and healthcare staff. This study aimed to evaluate the sound pressure levels and to assess noise perception of professionals in a NICU before and after structural modifications and layout redesign. The measurements were performed with a sound level meter. A questionnaire was given to staff before and after the intervention. The opinion of healthcare staff regarding noise in NICU was better after the intervention, when compared with the responses previously given. The results showed that noise levels were excessive in the NICU (before and after), exceeding the inter national recommendations, with the levels ranging between 46.6 dBA to 57.8 dBA before and 52.0 dBA to 54.0 dBA after intervention. Overall, there is a need for more research in order to verify the effectiveness of some actions and strategies to reduce the impact of noise in NICU.
    2021-03-18Journal article Open access Show more
  • Abnormal habituation of the auditory event-related potential P2 component in patients with schizophrenia
    Publication . Mazer, Prune; Macedo, Inês; Paiva, Tiago O.; Ferreira-Santos, Fernando; Paison, Rita; Barbosa, Fernando; Almeida, Pedro; Silveira, Celeste; Cunha-Reis, Cassilda; Marques-Teixeira, João
    Auditory event-related potentials (ERP) may serve as diagnostic tools for schizophrenia and inform on the susceptibility for this condition.Particularly, the examination of N1 and P2 components of the auditory ERP may shed light on the impairments of information processing streams in schizophrenia. However, the habituation properties (i.e., decreasing amplitude with the repeated presentation of an auditory stimulus) of these components remain poorly studied compared to other auditory ERPs.
    2021-03-18Journal article Open access Show more