Biomedical subjects

Liliane Desgualdo Pereira

Publications and source records attributed to Liliane Desgualdo Pereira.

7 recordsLinked to original sources

PubMed2006

[Dichotic listening and spect in dyslexic children].

Dichotic listening (DL) was evaluated in 36 children with: verbal dichotic listening test, alternating disyllable dichotic test and non-verbal dichotic listening test. Children were separated into two groups: experimental group with 18 dyslexic children and control group with 18 normal children. Both groups were comparable in gender, laterality and social-economic level. All dyslexic children underwent neuroimaging exam (SPECT). Our data showed that there was a statistical difference between both groups in all DL tests. Abnormal SPECT findings were seen in 50% of the dyslexic children, hypoperfusion of the left temporal lobe being the most frequent abnormality. We conclude that dyslexic children present an impairment of central neurologic processing that may be detected by DL tests, and by functional imaging exam, such as SPECT, as well.

Analysis of Variance↗

PubMed2003

Staggered spondaic word test in epileptic patients.

CONTEXT: Auditory processing during childhood may be altered if there is any predisposing factor during the course of development. Neurological disorders are among the risk factors for auditory processing impairment. From this perspective, epileptic children present such a risk factor and could present auditory processing dysfunction. OBJECTIVE: To evaluate central auditory processing in epileptic patients using the Staggered Spondaic Word Test (SSW) in order to verify whether these patients presented auditory disorders and whether the type of crisis partial or generalized played a role in the occurrence and type of disorder. SETTING: Tertiary care hospital. SAMPLE: Thirty-eight children and adolescents, ranging from 7 to 16 years old, with a diagnosis of epilepsy divided into two groups: 23 patients with partial crisis and 15 patients with generalized crisis. MAIN MEASUREMENTS: Performance in the Staggered Spondaic Word Test versus epileptic crisis type (partial or generalized). RESULTS: The majority of epileptic patients showed central auditory processing disorders. There were no differences in relation to crisis type. Both groups showed similar performance, although the results observed for these patients differ from what is obtained with normal populations. With regard to response bias, there were also no differences in performance between subjects with partial or generalized seizures. All possible disorders were found in both groups, without the prevalence of one specific disorder over the other. CONCLUSIONS: This study revealed a high prevalence of disorders among epileptic patients in relation to processing partially overlapped verbal sounds in a dichotic paradigm.

Adolescent↗

PubMedDate not supplied

Auditory processing assessment in children with obstructive sleep apnea syndrome.

INTRODUCTION: The obstructive sleep apnea syndrome (OSAS) is a respiratory disorder that occurs during sleep and it is relatively common in children. AIM: The goal of this paper is to verify if there is a relationship between the obstructive sleep apnea syndrome (OSAS) and auditory processing. METHODS: In order to do that, three groups of children ranging in age from 5 to 11 were studied, including a normal group. Twenty subjects who made up the study group were submitted to ear, nose and throat (ENT) exams and to polysomnography (PSG), and were divided in two groups: GROUP I (RO) comprised of 10 children who presented oral breathing and displayed normal PSG, and GROUP II (SAS) comprised of 10 children who presented oral breathing and displayed abnormal PSG. Their performance was compared to the performance of the third group--GROUP III (REN) comprised of 10 children who did not refer ENT difficulties. All the subjects completed a basic audiometric assessment as well as an auditory processing diagnosis. RESULTS: The analyses of the results revealed a statistically significant difference in ENT exams related to the turbinate and the palatine tonsils. Group II presented a higher incidence of turbinate hypertrophy levels II and III (p<0.001) and palatine tonsils hypertrophy grades III and IV (p 0.007). Regarding the auditory processing assessment, a statistically significant difference (p<0.001) was obtained in the dichotic digits test. Group II performed worse than group III. Also, for the non-verbal sequence memory test, Group II obtained a worse result (p<0.022) than Group I. CONCLUSION: Subjects with OSAS obtained worse results in auditory processing tests.

Audiometry↗

PubMedDate not supplied

Auditory processing in patients with temporal lobe epilepsy.

UNLABELLED: Temporal epilepsy, one of the most common presentation of this pathology, causes excessive electrical discharges in the area where we have the final station of the auditory pathway. Both the anatomical and functional integrity of the auditory pathway structures are essential for the correct processing of auditory stimuli. AIM: to check the Auditory Processing in patients with temporal lobe epilepsy regarding the auditory mechanisms of discrimination from sequential sounds and tone patterns, discrimination of the sound source direction and selective attention to verbal and nonverbal sounds. METHOD: eight individuals with temporal lobe epilepsy were assessed, after excluding those with non-confirmed diagnosis or with the focus of discharges not limited to this lobe. The evaluation was carried out through special auditory tests: Sound Localization Test, Duration Pattern Test, Digits Dichotic Test and Non-Verbal Dichotic Test. Their performances were compared to the performances of individuals without neurological diseases (case-control study). RESULTS: similar performances were observed between patients with temporal lobe epilepsy and the control group regarding the auditory mechanism of sound source direction discrimination. Comparing the other auditory mechanisms assessed, the patients with temporal lobe epilepsy presented worse results. CONCLUSION: individuals with temporal lobe epilepsy had more deficits in auditory processing than those without cortical damage.

Acoustic Stimulation↗

PubMedDate not supplied

[Auditory processing and high frequency audiometry in students of São Paulo].

BACKGROUND: Auditory processing and auditory sensibility to high Frequency sounds. AIM: To characterize the localization processes, temporal ordering, hearing patterns and detection of high frequency sounds, looking for possible relations between these factors. METHOD: 32 hearing fourth grade students, born in city of São Paulo, were submitted to: a simplified evaluation of the auditory processing; duration pattern test; high frequency audiometry. RESULTS: Three (9,4%) individuals presented auditory processing disorder (APD) and in one of them there was the coexistence of lower hearing thresholds in high frequency audiometry. CONCLUSION: APD associated to an auditory sensibility loss in high frequencies should be further investigated.

Audiometry, Pure-Tone↗

PubMedDate not supplied

Auditory fusion test in scholars.

BACKGROUND: Temporal resolution. AIM: To use an auditory fusion test with pure tone in children and to comparatively analyze the results in relation to gender, age and risk for presenting language development deficits, in group and individually. METHODS: 35 scholars, in the first or fourth grade, from a private school of Belo Horizonte were submitted to an auditory fusion test and had their life history analyzed. RESULTS: The mean values obtained for the resolution times when the test was performed in free camp, with headphones and per group were similar, and inferior to 15 ms. CONCLUSION: The presented test can be performed in scholars.

Age Distribution↗

PubMedDate not supplied

[Sequential verbal memory for three and four syllables in school children].

BACKGROUND: Auditory memory ability. AIM: To characterize the auditory memory ability for verbal sequences in children with ages ranging from 3 to 12 years. METHOD: A memory test for verbal sequences was used, as well as a variation with the addition of one syllable to each sequence. Participants were 223 students of public and private schools. RESULTS: All subjects repeated at least two out of the three sequences of three syllables. At the age of nine, they were capable of repeating all of the three sequences. At the age of six, they repeated at least two out of the three sequences of four syllables. CONCLUSION: The behavioral responses to verbal sounds presented in sequences, improves as children grow older. Children of private schools demonstrated an earlier development of this ability.

Age Factors↗