House mice (Mus musculus, outbred strain NMRI) were trained to locate loudspeakers at the margin of a wire-mesh covered circular platform. Sound signals were tone bursts of 1, 15, 50 and 80 kHz and noise bursts (bandwidth 15-80 kHz). Localization acuity as represented by orientation angles (alpha) toward the speaker was determined at 5 radial distances from the centre of the platform. If the animals could localize under closed-loop conditions (with repetitive stimulation), the distributions of (alpha) showed a significant peak at the speaker position (0 degrees) and mean orientation angles (alpha) for the different stimuli all varied around 0 degrees. Distributions of (alpha) from open-loop tests were not peaked, i.e. mice did not localize the sound source. We calculated the median angle (beta) of the distributions of orientated runs and used (beta) as a measure for the accuracy of localization. Smallest values of beta were 12 degrees for 1 kHz, 15 degrees for 15 kHz, 9.5 degrees for 50 kHz, 8.5 degrees for 80 kHz tone bursts and 7 degrees for the noise bursts. The results are discussed in relation to possible localization mechanisms in mice.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1242/jeb.109.1.163 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An Approach to Reduce Tuning Sensitivity in the PIC-Based Optoelectronic Oscillator by Controlling the Phase Shift in Its Feedback Loop.
Micromachines (Basel)
December 2024
Research Laboratory "Sensor Systems Based on Integrated Photonics Devices", Ufa University of Science and Technology, 32, Z. Validi St., Ufa 450076, Russia.
Radio photonic technologies have emerged as a promising solution for addressing microwave frequency synthesis challenges in current and future communication and sensing systems. One particularly effective approach is the optoelectronic oscillator (OEO), a simple and cost-effective electro-optical system. The OEO can generate microwave signals with low phase noise and high oscillation frequencies, often outperforming traditional electrical methods.
View Article and Find Full Text PDFImpact of ultrasonic pretreatment on pumpkin seed protein: Effect on protease activities, protein structure, hydrolysis kinetics and functional properties.
Food Res Int
February 2025
Department of Food Technology, Federal University of Viçosa, Av. Peter Henry Rolfs, S/n, University Campus, 36570-900, Viçosa, MG, Brazil. Electronic address:
Adding value to food by-products, such as pumpkin seeds, is an important strategy for the complete utilization of plant foods and advancing sustainability goals. This study aimed to maximize the production of bioactive peptides from pumpkin seed protein (PSP) by combining ultrasonic (US) pretreatment (40 kHz, 23.8 W/L) with enzymatic hydrolysis.
View Article and Find Full Text PDFExploring the Intricate Connection Between Vitamin B12 Deficiency and Hearing Loss: A Systematic Literature Review.
Ear Nose Throat J
January 2025
Department of Audiology and Speech Language Pathology, Kasturba Medical College Mangalore, Manipal Academy of Higher Education, Karnataka, Manipal, India.
Vitamin B12 is an essential nutrient crucial for overall health, and deficiencies can lead to hearing loss. The aim of the systematic review was to explore the intricate connection between vitamin B12 deficiency and hearing loss using a systematic literature review. A systematic literature search was carried out to identify the articles exploring the connection between vitamin B12 deficiency and hearing loss.
View Article and Find Full Text PDFApplication of Machine Learning to the Prediction of Surface Roughness in the Milling Process on the Basis of Sensor Signals.
Materials (Basel)
January 2025
Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, 35-959 Rzeszow, Poland.
This article presents an investigation of the use of machine learning methodologies for the prediction of surface roughness in milling operations, using sensor data as the primary source of information. The sensors, which included current transformers, a microphone, and displacement sensors, captured comprehensive machining signals at a frequency of 10 kHz. The signals were subjected to preprocessing using the Savitzky-Golay filter, with the objective of isolating relevant moments of active material machining and reducing noise.
View Article and Find Full Text PDFImpact of High- and Low-Pass Acoustic Filtering on Audiovisual Speech Redundancy and Benefit in Children.
Ear Hear
December 2024
Center for Hearing Research, Boys Town National Research Hospital, Omaha, Nebraska, USA.
Objectives: To investigate the influence of frequency-specific audibility on audiovisual benefit in children, this study examined the impact of high- and low-pass acoustic filtering on auditory-only and audiovisual word and sentence recognition in children with typical hearing. Previous studies show that visual speech provides greater access to consonant place of articulation than other consonant features and that low-pass filtering has a strong impact on perception on acoustic consonant place of articulation. This suggests visual speech may be particularly useful when acoustic speech is low-pass filtered because it provides complementary information about consonant place of articulation.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!