User profiles for Ilkka Laakso

Ilkka Laakso

Associate Professor, Aalto University
Verified email at aalto.fi
Cited by 4056

Inter-subject variability in electric fields of motor cortical tDCS

I Laakso, S Tanaka, S Koyama, V De Santis, A Hirata - Brain stimulation, 2015 - Elsevier
Background The sources of inter-subject variability in the efficacy of transcranial direct
current stimulation (tDCS) remain unknown. One potential source of variations is the brain's …

[HTML][HTML] Can electric fields explain inter-individual variability in transcranial direct current stimulation of the motor cortex?

I Laakso, M Mikkonen, S Koyama, A Hirata… - Scientific reports, 2019 - nature.com
The effects of transcranial direct current stimulation (tDCS) on motor cortical excitability are
highly variable between individuals. Inter-individual differences in the electric fields …

Effects of coil orientation on the electric field induced by TMS over the hand motor area

I Laakso, A Hirata, Y Ugawa - Physics in Medicine & Biology, 2013 - iopscience.iop.org
Responses elicited by transcranial magnetic stimulation (TMS) over the hand motor area
depend on the position and orientation of the stimulating coil. In this work, we computationally …

Fast multigrid-based computation of the induced electric field for transcranial magnetic stimulation

I Laakso, A Hirata - Physics in Medicine & Biology, 2012 - iopscience.iop.org
In transcranial magnetic stimulation (TMS), the distribution of the induced electric field, and
the affected brain areas, depends on the position of the stimulation coil and the individual …

Where and what TMS activates: experiments and modeling

I Laakso, T Murakami, A Hirata, Y Ugawa - Brain Stimulation, 2018 - Elsevier
Background Despite recent developments in navigation and modeling techniques, the type
and location of the structures that are activated by transcranial magnetic stimulation (TMS) …

Atlas of optimal coil orientation and position for TMS: A computational study

J Gomez-Tames, A Hamasaka, I Laakso, A Hirata… - Brain stimulation, 2018 - Elsevier
Background Transcranial magnetic stimulation (TMS) activates target brain structures in a
non-invasive manner. The optimal orientation of the TMS coil for the motor cortex is well …

Assessment of human exposure to electromagnetic fields: Review and future directions

…, D Colombi, V De Santis, I Laakso… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
This article reviews recent standardization activities and scientific studies related to the
assessment of human exposure to electromagnetic fields (EMF). The differences of human …

[HTML][HTML] Electric fields of motor and frontal tDCS in a standard brain space: a computer simulation study

I Laakso, S Tanaka, M Mikkonen, S Koyama, N Sadato… - Neuroimage, 2016 - Elsevier
The electric field produced in the brain is the main physical agent of transcranial direct
current stimulation (tDCS). Inter-subject variations in the electric fields may help to explain the …

Computational analysis shows why transcranial alternating current stimulation induces retinal phosphenes

I Laakso, A Hirata - Journal of neural engineering, 2013 - iopscience.iop.org
Objective. Transcranial alternating current stimulation (tACS), which is a novel technique for
the manipulation of cortical oscillations, can generate subjective visual sensations (…

Reducing the staircasing error in computational dosimetry of low-frequency electromagnetic fields

I Laakso, A Hirata - Physics in medicine & biology, 2012 - iopscience.iop.org
From extremely low frequencies to intermediate frequencies, the magnitude of induced
electric field inside the human body is used as the metric for human protection. The induced …