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Search Results: 1 - 10 of 465 matches for " Josilene Luciene "
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Potencial cognitivo P300 realizado em campo livre: aplicabilidade do teste
Duarte, Josilene Luciene;Alvarenga, Kátia de Freitas;Costa, Orozimbo Alves;
Revista Brasileira de Otorrinolaringologia , 2004, DOI: 10.1590/S0034-72992004000600013
Abstract: evaluation of the hearing function in individuals wearing electronic hearing aids is very important for the rehabilitation process. however, in these subjects, the procedures should be conducted in free field. aim: to analyze the applicability of p300 cognitive potential investigated in free field. study design: clinical prospective. material and method: thirty-three subjects of both genders were evaluated, aged 7 to 34 years, with normal hearing and no risk for mental disorders. p300 cognitive potential was performed with equipment biologic's evoked potential system (ep), with insertion phones (3a) under free field (0o azimuth and 45o azimuth). results: there were no statistically significant differences for latency of n2 and p300 and amplitude of p300 with regard to gender and conduction of the test (phone and free field), as well as for comparison of the measurements in free field at 0o and 45o azimuth. conclusion: investigation of p300 cognitive potential in free field is a viable procedure.
Correlation analysis of the long latency auditory evoked potential N2 and cognitive P3 with the level of lead poisoning in children
Alvarenga, Kátia de Freitas,Bernardez-Braga, Gabriela Rosito Alvarez,Zucki, Fernanda,Duarte, Josilene Luciene
International Archives of Otorhinolaryngology , 2013,
Abstract: Introduction: The effects of lead on children's health have been widely studied. Aim: To analyze the correlation between the long latency auditory evoked potential N2 and cognitive P3 with the level of lead poisoning in Brazilian children. Methods: This retrospective study evaluated 20 children ranging in age from 7 to 14 years at the time of audiological and electrophysiological evaluations. We performed periodic surveys of the lead concentration in the blood and basic audiological evaluations. Furthermore, we studied the auditory evoked potential long latency N2 and cognitive P3 by analyzing the absolute latency of the N2 and P3 potentials and the P3 amplitude recorded at Cz. At the time of audiological and electrophysiological evaluations, the average concentration of lead in the blood was less than 10 ug/dL. Results: In conventional audiologic evaluations, all children had hearing thresholds below 20 dBHL for the frequencies tested and normal tympanometry findings; the auditory evoked potential long latency N2 and cognitive P3 were present in 95% of children. No significant correlations were found between the blood lead concentration and latency (p = 0.821) or amplitude (p = 0.411) of the P3 potential. However, the latency of the N2 potential increased with the concentration of lead in the blood, with a significant correlation (p = 0.030). Conclusion: Among Brazilian children with low lead exposure, a significant correlation was found between blood lead levels and the average latency of the auditory evoked potential long latency N2; however, a significant correlation was not observed for the amplitude and latency of the cognitive potential P3.
A resposta auditiva de estado estável na avalia??o auditiva: aplica??o clínica
Duarte, Josilene Luciene;Alvarenga, Kátia de Freitas;Garcia, Tatiana Manfrini;Costa Filho, Orozimbo Alves;Lins, Otávio G;
Pró-Fono Revista de Atualiza??o Científica , 2008, DOI: 10.1590/S0104-56872008000200006
Abstract: background: the auditory steady state response (assr) is an electrophysiological procedure that evaluates, at the same time, the hearing thresholds of both ears at various frequencies. this procedure reduces the time of testing and enables the stimulation of levels close to 125db hl, characterizing residual hearing. aim: to verify the applicability of the assr to determine the hearing thresholds in different levels of sensorineural hearing loss. method: 48 individuals aged 7-30 years, with different levels of hearing loss were assessed. the pure tone audiometry (pta) and the assr were carried out in following carrier frequencies 0.5; 1; 2 and 4k hz. the carrier frequencies in the assr were modulated in amplitude and frequency, with multiple dicotic stimulation for mild and moderate hearing loss. simple stimulation was used to test the other hearing deficit levels. results: there was a significant association (p<0.01) between the thresholds obtained in the pta and in the assr for all of the tested frequencies, especially for the severe levels. however, for some patients, the hearing loss level was overestimated in the assr. conclusion: the assr can be used to estimate the pta threshold; nevertheless, it should not be analyzed in an isolated way, but seen as a complementary procedure to the behavioral auditory assessment.
Efeitos da inala??o passiva da fuma?a de cigarro sobre as pregas vocais de ratos
Duarte, Josilene Luciene;Faria, Flavio Augusto Cardoso de;Ceolin, Danielle Santi;Cestari, Tania Mary;Assis, Gerson Francisco de;
Revista Brasileira de Otorrinolaringologia , 2006, DOI: 10.1590/S0034-72992006000200010
Abstract: few studies have demonstrated the pathologic reactions yielded by smoke inhalation on the airway in rats. aim: the aim of this study was to analyze the possible histopathological effects produced by chronic cigarette smoke inhalation on the vocal folds of rats. study design: experimental. material and method: 36 male rats (rattus norvergicus wistar strain), aged 60 days, were kept in cages and exposed to inhalation of the smoke produced by 10 cigarettes lit 3 times a day, 7 days a week, for periods of 25, 50 and 75 days, and their respective controls. thereafter the animals were killed and their larynxes were dissected and submitted to histological processing for achievement of histological sections, which were stained with hematoxylin and eosin and analyzed by light microscopy. results: the rats exposed to smoke displayed smaller (p< 0,05) body mass than the control group. there was hyperplasia and squamous metaplasia in the free edge of the vocal fold and squamous hyperplasia on the middle portion of the vocal fold in all 3 study periods. moreover, the 50-day group revealed keratinizing metaplasia in this area. morphological alterations in other areas of the larynx and inflammatory reaction of the lamina propria were also not observed. conclusion: it was concluded that the passive inhalation of cigarette smoke yields important morphological changes in the vocal fold epithelium, which may progress to neoplasia.
Correlation analysis of the long latency auditory evoked potential N2 and cognitive P3 with the level of lead poisoning in children
Alvarenga, Kátia de Freitas;Bernardez-Braga, Gabriela Rosito Alvarez;Zucki, Fernanda;Duarte, Josilene Luciene;Lopes, Andrea Cintra;Feniman, Mariza Ribeiro;
International Archives of Otorhinolaryngology , 2013, DOI: 10.7162/S1809-97772013000100007
Abstract: introduction: the effects of lead on children's health have been widely studied. aim: to analyze the correlation between the long latency auditory evoked potential n2 and cognitive p3 with the level of lead poisoning in brazilian children. methods: this retrospective study evaluated 20 children ranging in age from 7 to 14 years at the time of audiological and electrophysiological evaluations. we performed periodic surveys of the lead concentration in the blood and basic audiological evaluations. furthermore, we studied the auditory evoked potential long latency n2 and cognitive p3 by analyzing the absolute latency of the n2 and p3 potentials and the p3 amplitude recorded at cz. at the time of audiological and electrophysiological evaluations, the average concentration of lead in the blood was less than 10 ug/dl. results: in conventional audiologic evaluations, all children had hearing thresholds below 20 dbhl for the frequencies tested and normal tympanometry findings; the auditory evoked potential long latency n2 and cognitive p3 were present in 95% of children. no significant correlations were found between the blood lead concentration and latency (p = 0.821) or amplitude (p = 0.411) of the p3 potential. however, the latency of the n2 potential increased with the concentration of lead in the blood, with a significant correlation (p = 0.030). conclusion: among brazilian children with low lead exposure, a significant correlation was found between blood lead levels and the average latency of the auditory evoked potential long latency n2; however, a significant correlation was not observed for the amplitude and latency of the cognitive potential p3.
Potencial evocado auditivo de longa latência-P300 em indivíduos normais: valor do registro simultaneo em Fz e Cz
Duarte, Josilene Luciene;Alvarenga, Kátia de Freitas;Banhara, Marcos Roberto;Melo, Ana Dolores Passarelli de;Sás, Roberta Moreno;Costa Filho, Orozimbo Alves;
Revista Brasileira de Otorrinolaringologia , 2009, DOI: 10.1590/S0034-72992009000200012
Abstract: the p300 is and auditory evoked potential, called endogenous potential because it reflects the functional use the individual makes of the auditory stimulus, being highly dependent on cognitive skills; among them we list attention and auditory discrimination. it is a procedure of objective evaluation; however, one that depends on the examiner's experience to detect wave peaks, and it is important to use recording methods that facilitate the response presence analysis and result interpretation. aim: to analyze the p300 long latency auditory evoked potential obtained through the use of two active electrodes positioned on fz and cz. materials and methods: 330 individuals from both genders and age ranging between 7 and 34 years participated in this study, they all had normal hearing and did not have any risk factor for mental problems. results: results show that there was no statistically significant difference for n2 and p3 latency and p3 amplitude as far as gender is concerned, nor correlation with the individual's age. there was a strong correlation of these measures with fz and cz electrode positioning. conclusion: fz and cz active electrodes positioning can be considered one more resource to help in the p300 clinical analysis.
Potencial cognitivo P300 em indivíduos com diabetes mellitus
Alvarenga, Kátia de Freitas;Duarte, Josilene Luciene;Silva, Daniela Polo Camargo da;Agostinho-Pesse, Raquel Sampaio;Negrato, Carlos Antonio;Costa, Orozimbo Alves;
Revista Brasileira de Otorrinolaringologia , 2005, DOI: 10.1590/S0034-72992005000200014
Abstract: diabetes mellitus may lead to alterations in the eyes, kidneys, cranial nerves, peripheral nerves, ears etc. the cognitive function also seems to be compromised in subjects presented with diabetes mellitus, since the cortical and subcortical structures responsible for this function are hindered in some insulin-dependent patients. the cognitive potential p300 has been used as an objective procedure to assess cerebral cognitive functions. aim: to analyze the sensitivity of p300 cognitive potential for the detection of alterations on the auditory cortex secondary to diabetes mellitus. study design: transversal cohort. material and method: sixteen diabetic subjects of both genders aged 7 to 71 years, and seventeen non-diabetic individuals at the same age range participated in this study. the evaluation procedures were pure tone audiometry (pta) and p300 cognitive potential. glycemia of the group presented with diabetes was assessed prior to applying p300. results: no statistically significant difference was shown for pta results. a statically significant difference was observed between groups when analyzing the latency of p300 component measured in fz. there was a correlation between glycemia and latency and amplitude of p300. conclusion:the investigation of the cognitive potential of p300 is an important procedure for prevention and early diagnosis of neurological changes in individuals presented with diabetes mellitus.
As representa??es do "erro" na aprendizagem da escrita numa classe de alfabetiza??o de jovens e adultos
Pereira, Josilene Domingues Santos;
Trabalhos em Linguística Aplicada , 2008, DOI: 10.1590/S0103-18132008000100009
Abstract: this paper is based on an ethnographic and collaborative research conducted in the area of applied linguistics. it describes some representations of "error" in the writing learning process of the young and adult literacy students at a school in vitória da conquista, bahia. data results show that the representations for both the teacher and the young and adult learners are reproductions of a "correct writing" image produced in the literacy events of the classroom.
História da arqueologia paranaense: um balan o da produ o arqueológica no Paraná no período de 1876-2001
Josilene Aparecida de Oliveira
Diálogos , 2010, DOI: 10.4025/dialogos.v6i1.232
Abstract:
Metanálise dos níveis de ractopamina em dietas para suínos em termina??o
Kiefer, Charles;Sanches, Josilene Figueiredo;
Revista Brasileira de Zootecnia , 2009, DOI: 10.1590/S1516-35982009000600010
Abstract: a meta-analytical study was conducted to evaluate the performance and characteristics of the carcass of finishing pigs fed with diets containing ractopamine. eighteen experiments containing four treatments and 2.991 animals were used. the treatments were composed of 0, 5, 10 and 20 ppm of ractopamine levels. the variables of performance and the quantitative characteristics of the carcass were analyzed. the average duration of the experimental periods was 28 ± 0.32 days. the average initial and final weights were 74.7 ± 10.9 kg and 107.6 ± 9.7 kg, respectively. no effect of ractopamine levels on the feed intake, hot carcass weight, carcass length and backfat depth was observed. the ractopamine levels influenced the weight gain, the feed:gain ratio, the dressing percent, the lean meat percentage of the carcass and the loin eye area. a linear effect was verified from the lysine levels of the weight gain, gain:feed ratio, hot carcass weight, backfat depth and lean meat percentage of pigs feed diet with 20 ppm of ractopamine. effect from the loin eye area in function from the lysine levels in the diets containing 10 and 20 ppm of ractopamine was observed. most of the variables was not influenced by the lysine levels. levels of 15 ppm of ractopamine optimize the swine performance, while levels of 20 ppm of ractopamine optimize the quantitative carcass characteristics. weight gain, backfat depth and lean meat carcass percent of swine fed diets containing ractopamine are optimized with 1.0% of true digestible lysine.
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