The University of Western Ontario
Brain and Mind Institute
London, Ontario N6A 5B7, Canada
Dr. rer. nat. (PhD)
I am a psychologist interested in Sensory and Cognitive Aging. My research combines neurophysiological with behavioral approaches to understand the sensory processes that enable humans to extract meaning from auditory signals, with the aim to understand the changes that explain the challenges older people experience with sounds in their everyday lives. Sensory impairments necessarily increase the load on cognitive capacities such as attention, which, in turn, takes a toll on the ability to engage in other tasks. My research aims to understand how listeners meet the cognitive challenges imposed by degraded sensory representations.
Herrmann et al. (accepted) Neurobiology of Aging
Billig et al. (in press) The Journal of Neuroscience
Kwok et al. (2019) Behavioural Brain Research 359:55-65
Parthasarathy et al. (2019) Neurobiology of Aging 73:30-40
Together with Chad Buckland and Ingrid Johnsrude, we show that aging is associated with changes in sensitivity to temporal regularity in sounds (bioRxiv). Neural snchronization tended to be larger, whereas sustained activity to be smaller in older compared to younger adults.
We just had our manuscript accept from J Neurosci (bioRxiv). Together with Alex Billig and the Iowa crew we use ECoG data to isolate a source of alpha oscillatory activity in the anterior-lateral auditory cortex. This was a fun project, check it out.
Behavioural Brain Research just accepted our manuscript (bioRxiv.) with dear colleagues from Western University. We show that alpha power, alpha frequency flexibility, and alpha long-range temporal correlations correlate with language abilities in 4 to 6 year old children.
Postdoc position in Ingrid Johnsrude's lab (job ad). Come to Western University (at the Brain and Mind Institute) and work with us on human auditory perception/cognition using electrophysiology and neuroimaging in younger (and older) listeners.
Great collaborative work with my friends and colleagues Ed Bartlett and Aravind Parthasarathy got accepted in Neurobiology of Aging. Using scalp and extracellular recordings, we show how temporal processing for speech-like sounds is altered in the aging rat. Check it out.
Good news: Our research grant is accepted for funding (UWO BrainsCAN). Ingrid S. Johnsrude and I will work on developing a new approach to assess cognitive challenges when listening to degraded auditory stimuli. This is very exciting and will hopeful provide us with interesting results.
The Journal of Neuroscience just accepted our new manuscript (Wilsch et al.), where we report work on the effects of temporal expectations on sensory memory using MEG. It will appear soon.
I am happy to have heard back from J Neuroscience today. Our paper got accepted for publication. In three EEG experiments, we investigate the relation between neural synchronization and sustained neural activity for processing temporal patterns in sounds. Check it out.
I look forward to the New Horizon Symposium on Vision and Hearing Research. If you are around, come and see great speakers. I will be talking about the processing of temporal regularities in aging on Tuesday the 6th.
We just made available on bioRxiv our new work on the neural signatures of temporal pattern processing (also at ARO in San Diego on Feb 13th, pdf). We investigate the relation between neural synchronization and sustained neural activity for processing temporal patterns in sounds.
The Journal of Neuroscience just accepted our manuscript (link) in which we show data on adaptation to stimulus statistics in aging. We show that adaptation to sound-level statistics is altered in auditory cortex of older people.
My research focuses on hearing, aging, and the brain, to answer the following questions:
In order to answer these and other questions, we make use of state-of-the-art electro- /magnetoencephalography & psychophysical methodology with cutting-edge analysis approaches.
Students and scientists might find some of the resources useful. They include how to plot pretty in matlab and links to useful things about data analysis and statistics.
For some methodological approaches, I provide a tutorial aiming to give an easy introduction into a topic. Topics include: Baseline correction in EEG/MEG, Linear-nonlinear modeling, and decoding based on neural phase.
I am currently a postdoc in the lab of Dr. Ingrid S. Johnsrude at the University of Western Ontario (Canada). We are often looking for interested and motivated undergraduate volunteers who are excited to gain experience in research and science. Please check out the lab webpage for further information.