Main content

Date created: | Last Updated:

: DOI | ARK

Creating DOI. Please wait...

Create DOI

Category: Project

Description: Natural sounds including all animal vocalisations have distinct temporal structure consisting of individual segments with variations over time that are either slow or fast. The ability to extract, represent, and detect an acoustic feature depends on the time window used for processing the acoustic signal. A short analysis window provides higher temporal resolution and enables quicker response while a long analysis window provides higher spectral resolution, better signal to noise ratio (SNR) which enables an accurate behavioural response. Use of optimal duration of analysis window enables the right trade-off between reaction time and accuracy of response of an animal. This aspect of auditory perception is ecologically important since fast and accurate response to acoustic stimuli is critical to the success of many animals, for instance survival depends on ability to hunt prey and avoid predators. The optimal duration of analysis window depends upon the underlying acoustic feature that needs to be processed. A slowly varying signal requires a longer analysis window while a rapidly varying signal requires a shorter analysis window. For instance in human speech, phonemes and syllables vary different and thus require different time windows. Use of different durations of analysis windows require distinct neuronal populations with appropriate time constants. A preferred time window of a given cortical area is defined as the minimum time period required to resolve two distinct acoustic events typically using the fluctuations in the neural discharge rates of that particular area. Thus different regions of the auditory brain are employed that utilize different time windows. So there exists an anatomical organisation of time window processing in auditory cortex. We aimed to identify the cortical organisation of analysis window in primates. A comparative study of this anatomical organisation of time window processing might reveal interesting similarities and differences between humans and non-human primates.

License: GNU General Public License (GPL) 3.0

Files

Loading files...

Citation

Components

MATLAB scripts for generating Spectral Flux stimuli

MATLAB based source code for generating Spectral Flux acoustic stimulus

Recent Activity

Loading logs...

Macaque Spectral flux fMRI data

Sparse fMRI data acquired from 3 macaques on Spectral flux experiment

Recent Activity

Loading logs...

NIH Cortex scripts for sparse fMRI data acquisition in macaques

NIH Cortex based source code for acquiring sparse fMRI data in macaques visual fixating for fluid reward

Recent Activity

Loading logs...

SPM script for sparse fMRI data processing single subject analysis

MATLAB script using SPM12 batch for performing single subject analysis on sparse fMRI data

Recent Activity

Loading logs...

Tags

Recent Activity

Loading logs...

OSF does not support the use of Internet Explorer. For optimal performance, please switch to another browser.
Accept
This website relies on cookies to help provide a better user experience. By clicking Accept or continuing to use the site, you agree. For more information, see our Privacy Policy and information on cookie use.
Accept
×

Start managing your projects on the OSF today.

Free and easy to use, the Open Science Framework supports the entire research lifecycle: planning, execution, reporting, archiving, and discovery.