A psychophysical approach to measuring the threshold for acoustic stimulation in zebrafish (Danio rerio)

2020 ◽  
Vol 147 (2) ◽  
pp. 1059-1065
Author(s):  
Kazuchika Manabe ◽  
R. J. Dooling
Keyword(s):  
Danio Rerio ◽  
Acoustic Stimulation ◽  
Psychophysical Approach

Evaluation of Special Hearing Aids for Deaf Children

1971 ◽  
Vol 36 (4) ◽  
pp. 527-537 ◽  
Author(s):  
Norman P. Erber
Keyword(s):  
Hearing Aids ◽  
High Frequency ◽  
Hearing Aid ◽  
Low Frequency ◽  
Acoustic Stimulation ◽  
Deaf Children ◽  
Frequency Range ◽  
Frequency Limit ◽  
Unpublished Studies ◽  
Published Research

Two types of special hearing aid have been developed recently to improve the reception of speech by profoundly deaf children. In a different way, each special system provides greater low-frequency acoustic stimulation to deaf ears than does a conventional hearing aid. One of the devices extends the low-frequency limit of amplification; the other shifts high-frequency energy to a lower frequency range. In general, previous evaluations of these special hearing aids have obtained inconsistent or inconclusive results. This paper reviews most of the published research on the use of special hearing aids by deaf children, summarizes several unpublished studies, and suggests a set of guidelines for future evaluations of special and conventional amplification systems.

Local interaction rules and collective motion in black neon tetra (Hyphessobrycon herbertaxelrodi) and zebrafish (Danio rerio).

2019 ◽  
Vol 133 (2) ◽  
pp. 143-155 ◽  
Author(s):  
Vicenç Quera ◽  
Elisabet Gimeno ◽  
Francesc S. Beltran ◽  
Ruth Dolado
Keyword(s):  
Danio Rerio ◽  
Collective Motion ◽  
Local Interaction

STUDYING THE ATTITUDES OF THE STUDENTS OF SPECIALTY "MIDWIFE" CONCERNING PERFORMING UNIVERSAL NEONATAL HEARING SCREENING

2019 ◽  
pp. 146-152
Author(s):  
Anka Nestorova ◽  
Darina A. Ivanova
Keyword(s):  
Otoacoustic Emissions ◽  
Professional Competence ◽  
Acoustic Stimulation ◽  
Hearing Screening ◽  
Impaired Hearing ◽  
Study Materials ◽  
Neonatal Hearing Screening ◽  
Screening Study ◽  
Students Attitudes ◽  
Universal Neonatal Hearing Screening

Hearing is one of the five human senses and represents the ability to perceive sounds through the hearing system. The presence of normal auditory perception is one of the prerequisites for the emergence and development of speech in children. Conducting neonatal auditory screening is part of the early neonatal screening and incorporates examining infant’s hearing shortly after birth. A screening device is used that emits very low sounds with the help of simultaneous "otoacoustic emissions" from the inner ear of this acoustic stimulation. The latest researches show that in one or two in a thousand births the child has congenital deafness or impaired hearing. Aim: To acquaint midwifery students with the implementation of universal neonatal hearing screening using information from the Trakia Electronic University. Materials and Methods: The conducted survey allows us to study students' attitudes towards the audio screening. Study materials are accessible via the Internet in our e-university. The use of digital and multimedia materials is a way of enhancing the students' professional competence and the effectiveness of the learning process.

Efektivitas Hipoglikemik Fraksi Etil Asetat Ampas Tahu menggunakan Model Hewan Ikan Zebra (Danio rerio)

2020 ◽  
Vol 5 (1) ◽  
pp. 16-21
Author(s):  
Nina Herlina ◽  
Mulyati ◽  
Yulianita ◽  
Putri Ananda
Keyword(s):  
Danio Rerio ◽  
Area Under Curve

Ampas tahu mengandung isoflavon genistein dan daidzein yang diduga memiliki efek hipoglikemik. Penelitian ini bertujuan untuk menguji efek hipoglikemik fraksi etil asetat ampas tahu (FEAAT). Ekstraksi isoflavon ampas tahu dilakukan dengan metode refluks menggunakan etanol dan HCl, kemudian fraksinasi menggunakan etil asetat. Efek hipoglikemik FEAAT dibuktikan menggunakan ikan zebra sebagai hewan uji. Kelompok perlakuan terdiri dari kontrol negatif (akuades), FEAAT1 dan FEAAT2 dengan konsentrasi 3,75% dan 5% serta kontrol positif (metformin). Hiperglikemia diinduksi dengan perendaman menggunakan aloksan 0,05% selama 30 menit, glukosa 1% selama 30 menit. Selanjutnya dilakukan pemberian sampel uji selama 120 menit secara berurutan untuk menguji efek hipoglikemik dari sampel uji. Cuplikan darah diambil pada menit ke-0, 30, 60, 90, dan 120 untuk diuji kadar glukosa darah. Hasil uji menunjukkan bahwa terdapat perbedaan yang nyata pada luas Area Under Curve (AUC0-120) kontrol negatif dengan FEAAT2 dan metformin (p < 0,01). Sementara hasil nilai AUC0-120 FEAAT1 tidak berbeda nyata dengan kontrol negatif. FEAAT2 efektif sebagai agen hipoglikemik pada model hewan ikan zebra yang diinduksi hiperglikemik.

MONITORING BEHAVIORAL RESPONSES OF ZEBRAFISH (Danio rerio) AS A BIOMARKER FOR IDENTIFYING CADMIUM AND DELTAMETHRIN IN WATER

2016 ◽  
Vol 15 (10) ◽  
pp. 2171-2179 ◽  
Author(s):  
Jin-Song Zhang ◽  
Yi Huang ◽  
Xiao-Bo Han ◽  
Ting-Lin Huang ◽  
Alice K. Y. Chan
Keyword(s):  
Danio Rerio ◽  
Behavioral Responses
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