My Research

I am currently working on understanding the dynamics underlying auditory scene analysis in humans using EEG. I am also investigating the cortical processing of auditory object boundary and auditory working memory using MEG.

In my PhD, I developed "A primate model of human cortical analysis of auditory objects". Specifically, I explored whether monkeys are a good model of human auditory scene analysis and anatomical organisation of time window processing using non-invasive brain imaging (fMRI) and behaviour.

I have listed some of my recent projects below. If you wish to know more about my projects and/or you wish to collaborate with me then please get in touch via email.

More than half the world's population above the age of 75 years develop age-related hearing loss. They have difficulty understanding speech amidst background noise, like when listening to someone speak in a noisy cafe. Colloquially this is known as the ‘cocktail party problem’ which most animals and humans are able to solve but computers cannot. However, how our brains solve this challenge is not well understood.

I developed a monkey model to understand the brain mechanisms underlying auditory segregation. Currently, I am investigating the brain dynamics in humans.

Read more about this project here

Sounds differ in the duration over which information is conveyed. For instance, phonemes are short in duration while syllables are much longer. Similarly, musical instruments differ in the rate at which sounds change. So the optimal duration of time window that the brain requires to employ for analysis depends on the kind of acoustic feature.

This project aims to understand how the primate brain organises the processing of sounds that require time-windows of different duration?

Read more about this project here

A visual object might be easy to define and understand, but objects perceived via audition are also important. A fundamental question in auditory perception is how does the brain detect appearance of a new auditory source in an ongoing auditory scene. For instance, we are able to perceive when a new voice appears at our dinner table without even looking.

This project aims to understand the brain dynamics underlying the detection of a new auditory object.

Read more about this project here

Auditory working memory (WM) is the process of keeping representations of auditory objects in mind for short duration even when the sounds are not in the environment. I am investigating non-verbal WM which is different from phonological WM as these sounds cannot be assigned a semantic label.

My MEG project aims to understand the dynamics underlying AWM. What mechanisms underlie neural activity during retention? What is the role of hippocampus in AWM?

Read more about this project here

Auditory Spatial Perception

In this project, I aimed to validate the percept induced by a virtual motion of an auditory stimuli.

Read more about this project here