Talks and presentations

In this map you can see a geographic depiction of where science has taken me over the years. There are a lot of gratifying things associated with being a scientist, and one of them is the unique opportunity to travel around the world and meet people from all nationalities and backgrounds.

This section is still under construction. More talks will be added shortly.

Individual variability in resting-state fMRI [VIDEO AVAILABLE]

August 02, 2021

NIMH Center for Multimodal Imaging - Workshop on Naturalistic Stimuli and Individual Differences, National Institute of Mental Health, NIH (Online), Bethesda, MD, USA

Overview of state-of-the-art regarding our understanding of sources of individual differences in resting-state fMRI. This talk first describes the primary sources of variability, and then provide some thoughts on how to address those sources depending on whether a given study targets “state-level” or “trait-level” properties of the brain. []

Multi-echo EPI for task-based and resting-state fMRI

July 13, 2018

NIH Summer Course (2018), National Institutes of Health, Bethesda, MD

Introductory talk to multi-echo fMRI. Here I discuss what is multi-echo fmri, basic operations you can do with multi-echo data (e.g., optimal combination), and more advanced approaches such as me-based denoising (ME-ICA) and multi-ech based deconvolution (ME-SPFM).

Machine Learning and fMRI

August 11, 2017

NIH Summer Course (2017), National Institutes of Health, Bethesda, MD

Introductory talk to machine learning (ML) for neuroimagers. Here I introduce basic concepts such as supervised and unsupervised learning, regression, classification, gradient descent, overfitting and testing. I next discuss a few examples of how ML can be applied to functional neuroimaing data.

Uncovering hidden activations using model-free analysis

May 12, 2016

ISMRM 24th Annual Meeting, Suntec Singapore Convention & Exhibition Center, Singapore, Singapore

Here I describe our work looking at unconventional BOLD responses such as negative and transient responses that accompany block task designs.

Multi-echo EPI for resting state and activaton based fMRI

March 24, 2016

TTU Neuroimaging Symposium, Texas Tech University, Lubbock, TX

Here I give an overview on our efforts at the time in developing methods for multi-echo fMRI, and how you can use multi-echo fMRI to perform automatic denoising.

Realtime fMRI/fMRI Neurofeedback

August 29, 2014

NIH Summer Course (2014), National Institutes of Health, Bethesda, MD

Introductory talk to realtime fMRI and fMRI-based neurofeedback. Here I describe what is realtime fMRI, the details of the realtime fMRI system that we have running at the NIH, and a series of studies that takes advantage of this unique technology.

What is the ultimate sensitivity of fMRI: does the whole brain activate?

May 11, 2012

ISMRM 20th Annual Meeting, Melbourne Convention & Exhibition Center, Melbourne, Australia

Original description of our work looking at the true extent of fMRI activity when signal-to-noise ratio is sufficiently high and we also take into account transitory and negative BOLD responses.