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Book ; Online: Color Vision Sensation and Perception

Costa, Marcelo Fernandes

2016

Abstract: Color vision is considered a microcosm of the visual science. Special physiological and psychological processes make this scientific topic an intriguing and complex research field that can aggregates around molecular biologists, neurophysiologists, ... ...

Abstract	Color vision is considered a microcosm of the visual science. Special physiological and psychological processes make this scientific topic an intriguing and complex research field that can aggregates around molecular biologists, neurophysiologists, physicists, psychophysicists and cognitive neuroscientists. Our purpose is to present the frontier knowledge of this area of visual science, showing, in the end, the future prospects of application and basic studies of color perception
Keywords	Science (General) ; Psychology
Size	1 electronic resource (91 p.)
Publisher	Frontiers Media SA
Document type	Book ; Online
Note	English ; Open Access
HBZ-ID	HT020090679
ISBN	9782889199600 ; 2889199606
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Validation of a computerized version of the MNREAD chart for children.

Costa, Marcelo Fernandes / Henriques, Leonardo Dutra / Souza, Givago Silva

International ophthalmology

2024 Volume 44, Issue 1, Page(s) 127

Abstract: Purpose: We aimed the develop and validate a computerized version of the MNREAD for the assessment of reading speed for children.: Methods: A computerized version of the MNREAD was built in Psykinematix software using the same parameters as the ... ...

Abstract	Purpose: We aimed the develop and validate a computerized version of the MNREAD for the assessment of reading speed for children. Methods: A computerized version of the MNREAD was built in Psykinematix software using the same parameters as the physical chart. We measured the reading velocity of 104 children (n = 44 of the 3rd grade; n = 60 of the 5th grade). Bland-Altaman analysis was used to quantify agreement between two chart measurements. Results: Comparison between the 3rd and 5th-grade children for physical and computerized MNREAD versions showed statistical differences in Maximum Reading Speed (F = 2669.6; p < 0.001), Critical Print Size (F = 17.49; p < 0.001), and Reading Acuity (F = 14.19; p = 0.002) with huge effect size (η Conclusion: Our reading speed values for children in the 5th grade were higher than previous studies, suggesting a better quality of the assessment in the computerized version. Tolerance Limits were calculated as normality references for clinical purposes.
MeSH term(s)	Child ; Humans ; Vision Tests ; Visual Acuity ; Reading ; Educational Status ; Software
Language	English
Publishing date	2024-03-11
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	800087-6
ISSN	1573-2630 ; 0165-5701
ISSN (online)	1573-2630
ISSN	0165-5701
DOI	10.1007/s10792-024-03056-2
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Article ; Online: Visual stimulation in the neonatal intensive care unit: A systematic literature review.

Moran, Cristiane Aparecida / Costa, Victor Seabra Lima Prado / Marx, Letícia Oliveira / Fernandes Costa, Marcelo

Journal of child health care : for professionals working with children in the hospital and community

2024 , Page(s) 13674935241227344

Abstract: We aimed to systematically categorize evidence on the types of early visual stimulation applied to preterm infants (PTIs) admitted to neonatal intensive care units (NICUs), aiming to improve visual function parameters. This study was conducted according ... ...

Abstract	We aimed to systematically categorize evidence on the types of early visual stimulation applied to preterm infants (PTIs) admitted to neonatal intensive care units (NICUs), aiming to improve visual function parameters. This study was conducted according to PRISMA and registered in PROSPERO with CRD42022333753. Last search was conducted on March 15, 2023, in four different databases. Articles written in English, Portuguese, Spanish, or Italian, and available in full text were included. Two independent authors performed study selection, data extraction, and bias risk assessment. If there was any disagreement, a third author was contacted. A total of eight studies were included. From these, 62.5% presented a low risk of bias. 100% used a multisensory intervention, which included visual stimulation. In 50%, visual intervention consisted of black and white stimulation cards placed inside the incubator for three minutes. The outcomes showed positive benefits in visual function parameters and other reported clinical benefits in breastfeeding and neuromuscular development. This review demonstrated there is still scarce literature on the effects of early visual stimulation on purely visual functional outcomes, although the existing findings are promising. Parental involvement has been generating unquestionable benefits for the binomial mother-infant and gaining greater acceptance by health professionals.
Language	English
Publishing date	2024-01-11
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	2299167-0
ISSN	1741-2889 ; 1367-4935
ISSN (online)	1741-2889
ISSN	1367-4935
DOI	10.1177/13674935241227344
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Article ; Online: Health belief model for coronavirus infection risk determinants.

Costa, Marcelo Fernandes

Revista de saude publica

2020 Volume 54, Page(s) 47

Abstract: OBJECTIVE To use the advantages of a ratio scale with verbal anchors in order to measure the risk perception in the novel coronavirus infection, which causes covid-19, in a health belief model-based questionnaire, as well as its validity and ... ...

Abstract	OBJECTIVE To use the advantages of a ratio scale with verbal anchors in order to measure the risk perception in the novel coronavirus infection, which causes covid-19, in a health belief model-based questionnaire, as well as its validity and reproducibility. METHOD We used the health belief model, which explores four dimensions: perceived susceptibility (five questions), perceived severity (five questions), perceived benefits (five questions), and perceived barriers (five questions). Additionally, we included a fifth dimension, called pro-health motivation (four questions). The questions composed an electronic questionnaire disseminated by social networks for an one-week period. Answers were quantitative values of subjective representations, obtained by a psychophysically constructed scale with verbal anchors ratio (CentiMax ® ). Mean time for total filling was 12 minutes (standard deviation = 1.6). RESULTS We obtained 277 complete responses to the form. One was excluded because it belonged to a participant under 18 years old. Reproducibility measures were significant for 22 of the 24 questions in our questionnaire (Cronbach's α = 0.883). Convergent validity was attested by Spearman-Brown's split half reliability coefficient (r = 0.882). Significant differences among groups were more intense in perceived susceptibility and severity dimensions, and less in perceived benefits and barriers. CONCLUSION Our health belief model-based questionnaire using quantitative measures enabled the confirmation of popular beliefs about covid-19 infection risks. The advantage in our approach lays in the possibility of quickly, directly and quantitatively identifying individual belief profiles for each dimension in the questionnaire, serving as a great ally for communication processes and public health education.
MeSH term(s)	Adolescent ; Adult ; Aged ; Betacoronavirus ; Brazil ; COVID-19 ; Coronavirus Infections/psychology ; Coronavirus Infections/transmission ; Culture ; Female ; Humans ; Male ; Middle Aged ; Models, Psychological ; Pandemics ; Pneumonia, Viral/psychology ; Pneumonia, Viral/transmission ; Reference Values ; Reproducibility of Results ; Risk Assessment/methods ; Risk Factors ; SARS-CoV-2 ; Socioeconomic Factors ; Surveys and Questionnaires/standards ; Young Adult
Keywords	covid19
Language	Portuguese
Publishing date	2020-05-20
Publishing country	Brazil
Document type	Comparative Study ; Journal Article
ZDB-ID	732179-x
ISSN	1518-8787 ; 0034-8910
ISSN (online)	1518-8787
ISSN	0034-8910
DOI	10.11606/s1518-8787.2020054002494
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Article ; Online: Health belief model for coronavirus infection risk determinants

Costa, Marcelo Fernandes

Revista de Saúde Pública v.54 2020

2020

Abstract: ABSTRACT OBJECTIVE To use the advantages of a ratio scale with verbal anchors in order to measure the risk perception in the novel coronavirus infection, which causes covid-19, in a health belief model-based questionnaire, as well as its validity and ... ...

Abstract	ABSTRACT OBJECTIVE To use the advantages of a ratio scale with verbal anchors in order to measure the risk perception in the novel coronavirus infection, which causes covid-19, in a health belief model-based questionnaire, as well as its validity and reproducibility. METHOD We used the health belief model, which explores four dimensions: perceived susceptibility (five questions), perceived severity (five questions), perceived benefits (five questions), and perceived barriers (five questions). Additionally, we included a fifth dimension, called pro-health motivation (four questions). The questions composed an electronic questionnaire disseminated by social networks for an one-week period. Answers were quantitative values of subjective representations, obtained by a psychophysically constructed scale with verbal anchors ratio (CentiMax ® ). Mean time for total filling was 12 minutes (standard deviation = 1.6). RESULTS We obtained 277 complete responses to the form. One was excluded because it belonged to a participant under 18 years old. Reproducibility measures were significant for 22 of the 24 questions in our questionnaire (Cronbach’s α = 0.883). Convergent validity was attested by Spearman-Brown’s split half reliability coefficient (r = 0.882). Significant differences among groups were more intense in perceived susceptibility and severity dimensions, and less in perceived benefits and barriers. CONCLUSION Our health belief model-based questionnaire using quantitative measures enabled the confirmation of popular beliefs about covid-19 infection risks. The advantage in our approach lays in the possibility of quickly, directly and quantitatively identifying individual belief profiles for each dimension in the questionnaire, serving as a great ally for communication processes and public health education.
Keywords	Coronavirus Infections ; prevention & ; control ; psychology ; Risk Reduction Behavior ; Health Knowledge ; Attitudes ; Practice ; covid19
Subject code	300
Language	English
Publishing date	2020-01-01
Publisher	Faculdade de Saúde Pública da Universidade de São Paulo
Publishing country	br
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Platelet-Derived Microvesicles Contribute to the Pathophysiogenesis of Human Cutaneous Leishmaniasis: A Nano-Flow Cytometric Approach in Plasma Samples from Patients before and under Antimonial Treatment.

Costa, Vanessa Fernandes de Abreu / Chometon, Thaize Quiroga / de Castro, Katherine Kelda Gomes / Ponte, Melissa Silva Gonçalves / Pimentel, Maria Inês Fernandes / Lyra, Marcelo Rosandiski / Bertho, Alvaro Luiz

Microorganisms

2024 Volume 12, Issue 3

Abstract: Cutaneous leishmaniasis is a neglected tropical disease caused, in Brazil, mainly ... ...

Abstract	Cutaneous leishmaniasis is a neglected tropical disease caused, in Brazil, mainly by
Language	English
Publishing date	2024-03-06
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2720891-6
ISSN	2076-2607
ISSN	2076-2607
DOI	10.3390/microorganisms12030526
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Article ; Online: Chlorpyrifos impairs sperm parameters and number of Sertoli and Leydig cells in rats after exposure during the peripubertal period.

da Costa, Ivana Regina / Quadreli, Débora Hipólito / da Silva, Lucas Marcelo Meira / de Andrade, Fábio Goulart / Fernandes, Glaura Scantamburlo Alves

Toxicology

2024 Volume 504, Page(s) 153789

Abstract: Chlorpyrifos is an organophosphate insecticide used to control pests in crops. Thus, humans are constantly exposed through ingestion of contaminated food or water, inhalation of contaminated air, and through the skin. The juvenile and peripubertal ... ...

Abstract	Chlorpyrifos is an organophosphate insecticide used to control pests in crops. Thus, humans are constantly exposed through ingestion of contaminated food or water, inhalation of contaminated air, and through the skin. The juvenile and peripubertal periods comprise a window of development of the reproductive system, sensitive to toxic agents. Considering the scarcity of data on exposure to the insecticide during these periods, the aim of this study was to evaluate the effects of chlorpyrifos on the testis during the juvenile and peripubertal periods. Thirty Wistar rats with an initial age of 25 days were distributed into 3 groups: control, which received corn oil (vehicle); CPS5, which received 5 mg/Kg b.w. of chlorpyrifos; and CPS15, which received 15 mg/Kg b.w. of chlorpyrifos. The groups were treated via gavage daily for 40 days and on the 41st experimental day, the animals were anesthetized and submitted to euthanasia to collect the organs. Blood was collected to obtain plasma and testosterone measurement. The testicles were removed, weighed and used for sperm count analyses, histopathological and morphometric analyzes and for oxidative stress analyses. Spermatozoa from the vas deferens were collected for analyzes of sperm morphology and acrosome integrity. The results showed that the two concentrations of chlorpyrifos caused a decrease in the number of Leydig and Sertoli cells and germ cells and increased the number of morphologically abnormal sperm and sperm with acrosomal damage. Furthermore, a decrease in lipid peroxidation was observed in the CPS5 and CPS15 groups, and a decrease in glutathione-S-transferase activity in the CPS5 group. We conclude that exposure to chlorpyrifos harms the daily production of sperm, as well as their quality, in addition to causing an imbalance in the oxidoreductive balance of the testicle.
MeSH term(s)	Animals ; Male ; Chlorpyrifos/toxicity ; Rats, Wistar ; Insecticides/toxicity ; Spermatozoa/drug effects ; Spermatozoa/pathology ; Leydig Cells/drug effects ; Leydig Cells/pathology ; Leydig Cells/metabolism ; Sertoli Cells/drug effects ; Sertoli Cells/metabolism ; Sertoli Cells/pathology ; Rats ; Sexual Maturation/drug effects ; Oxidative Stress/drug effects ; Testosterone/blood ; Testis/drug effects ; Testis/pathology ; Testis/metabolism ; Sperm Count
Chemical Substances	Chlorpyrifos (JCS58I644W) ; Insecticides ; Testosterone (3XMK78S47O)
Language	English
Publishing date	2024-03-23
Publishing country	Ireland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	184557-3
ISSN	1879-3185 ; 0300-483X
ISSN (online)	1879-3185
ISSN	0300-483X
DOI	10.1016/j.tox.2024.153789
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Article ; Online: Flap of the sternocephalicus muscle in the repair of a partial defect in the trachea of a rabbit (Oryctolagus cuniculus).

Fernandes, Gustavo / Rein, Ariadne / Montanhim, Gabriel Luiz / Costa, Marcelo Carrijo da / Leite, Marcella Dall'Agnol / Soares, Nicolle Pereira / Moraes, Paola Castro

Acta cirurgica brasileira

2024 Volume 39, Page(s) e390324

Abstract: Purpose: The current study aimed at evaluating the repair of a partial defect of the trachea with a muscle flap, an advanced technique that employs combined suture patterns.: Methods: Sixteen healthy male New Zealand white rabbits were used as an ... ...

Abstract	Purpose: The current study aimed at evaluating the repair of a partial defect of the trachea with a muscle flap, an advanced technique that employs combined suture patterns. Methods: Sixteen healthy male New Zealand white rabbits were used as an experimental model. A partial defect in the trachea within the ventral region of the fourth to eighth tracheal ring was created. Subsequently, repair was initiated with a flap of the sternocephalicus muscle. The animals were divided into four groups for postoperative evaluation using clinical, tracheoscopic, and histopathological analyses. Each group was separated according to the time of euthanasia, programmed at interval of seven (G7), 15 (G15), 30 (G30), and 60 days (G60). Results: One animal from the G60 group died, whereas the other animals had good surgical recovery without serious changes in the breathing pattern. The major clinical signs observed were stridor and coughing. Tracheoscopy revealed secretions in the tracheal lumen, exuberant granulation, and stenosis. Histopathological analysis showed growth of the ciliary respiratory epithelium at the flap site 30 days after implantation. Conclusions: Partial repair showed satisfactory results owing to the anatomical location of the muscle, adequate vascular support, and structural and physiological maintenance without serious changes in the respiratory system.
MeSH term(s)	Rabbits ; Male ; Animals ; Trachea/surgery ; Trachea/pathology ; Plastic Surgery Procedures ; Surgical Flaps/surgery ; Muscles/surgery
Language	English
Publishing date	2024-02-05
Publishing country	Brazil
Document type	Journal Article
ZDB-ID	2012156-8
ISSN	1678-2674 ; 1678-2674
ISSN (online)	1678-2674
ISSN	1678-2674
DOI	10.1590/acb390324
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Health belief model for coronavirus infection risk determinants

Costa, Marcelo Fernandes

Rev Saude Publica

Abstract	OBJECTIVE To use the advantages of a ratio scale with verbal anchors in order to measure the risk perception in the novel coronavirus infection, which causes covid-19, in a health belief model-based questionnaire, as well as its validity and reproducibility. METHOD We used the health belief model, which explores four dimensions: perceived susceptibility (five questions), perceived severity (five questions), perceived benefits (five questions), and perceived barriers (five questions). Additionally, we included a fifth dimension, called pro-health motivation (four questions). The questions composed an electronic questionnaire disseminated by social networks for an one-week period. Answers were quantitative values of subjective representations, obtained by a psychophysically constructed scale with verbal anchors ratio (CentiMax ® ). Mean time for total filling was 12 minutes (standard deviation = 1.6). RESULTS We obtained 277 complete responses to the form. One was excluded because it belonged to a participant under 18 years old. Reproducibility measures were significant for 22 of the 24 questions in our questionnaire (Cronbach's α = 0.883). Convergent validity was attested by Spearman-Brown's split half reliability coefficient (r = 0.882). Significant differences among groups were more intense in perceived susceptibility and severity dimensions, and less in perceived benefits and barriers. CONCLUSION Our health belief model-based questionnaire using quantitative measures enabled the confirmation of popular beliefs about covid-19 infection risks. The advantage in our approach lays in the possibility of quickly, directly and quantitatively identifying individual belief profiles for each dimension in the questionnaire, serving as a great ally for communication processes and public health education.
Keywords	covid19
Publisher	WHO
Document type	Article
Note	WHO #Covidence: #32491096
Database	COVID19

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Article: Development of a Spatio-temporal Contrast Sensitivity Test for Clinical Use.

Fernandes Costa, Marcelo / Dutra Henriques, Leonardo / Côrrea Pinho, Otávio

Journal of ophthalmic & vision research

2022 Volume 17, Issue 1, Page(s) 69–77

Abstract: Purpose: We developed a contrast sensitivity test that considers an integrative approach of spatial and temporal frequencies to evaluate the psychophysical channels in processing two-dimensional stimulus for clinical use. Our new procedure provides a ... ...

Abstract	Purpose: We developed a contrast sensitivity test that considers an integrative approach of spatial and temporal frequencies to evaluate the psychophysical channels in processing two-dimensional stimulus for clinical use. Our new procedure provides a more efficient isolation of the magnocellular and parvocellular visual pathways supporting spatiotemporal contrast sensitivity processing. Methods: We evaluated 36 participants of both sexes aged 18-30 years with 20/20 or better best-corrected visual acuity. Two spatial frequencies (0.5 cycles per degree [cpd] and 10 cpd), being in one of the three temporal frequencies (0.5 cycle per second [cps], 7.5 cps, and 15 cps), were presented in a high-resolution gamma corrected monitor. A two-alternative forced-choice procedure was conducted, and the staircase method was used to calculate the contrast sensitivity. Reliability was assessed using a retest procedure within a month ( Results: Results showed statistical significance in 0.5 cpd and 10 cpd spatial frequencies for 0.5 cps ( Conclusion: We developed an approach to investigate the spatiotemporal integration of contrast sensitivity designed for clinical purposes. The relative contribution of the low spatial frequencies/high temporal frequencies and the high spatial frequencies/low temporal frequencies of the psychophysical channels can also be evaluated separately.
Language	English
Publishing date	2022-01-21
Publishing country	United Arab Emirates
Document type	Journal Article
ISSN	2008-2010
ISSN	2008-2010
DOI	10.18502/jovr.v17i1.10172
Database	MEDical Literature Analysis and Retrieval System OnLINE

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