Short-term high-frequency transcutaneous electrical nerve stimulation decreases human motor cortex excitability

T Mima, T Oga, J Rothwell, T Satow, J Yamamoto… - Neuroscience …, 2004 - Elsevier
Several pervious studies have shown that periods of changed sensory input can have after
effects on the excitability of the corticospinal system. Here we test whether the parameters of …

Abnormal cortical mechanisms of voluntary muscle relaxation in patients with writer's cramp: an fMRI study

T Oga, M Honda, K Toma, N Murase, T Okada… - Brain, 2002 - academic.oup.com
Although it is hypothesized that there is abnormal motor inhibition in patients with dystonia,
the question remains as to whether the mechanism related to motor inhibition is specifically …

Transcranial magnetic stimulation (TMS) of the sensorimotor cortex and medial frontal cortex modifies human pain perception

M Kanda, T Mima, T Oga, M Matsuhashi, K Toma… - Clinical …, 2003 - Elsevier
Objective: Although recent neuroimaging studies have shown that painful stimuli can
produce activity in multiple cortical areas, the question remains as to the role of each area in …

Low-frequency rTMS over lateral premotor cortex induces lasting changes in regional activation and functional coupling of cortical motor areas

WH Chen, T Mima, HR Siebner, T Oga, H Hara… - Clinical …, 2003 - Elsevier
Objective: To study the effect of 0.9 Hz repetitive transcranial magnetic stimulation (rTMS) of
the lateral premotor cortex on neuronal activity in cortical motor areas during simple motor …

Altered prefrontal function with aging: insights into age-associated performance decline

AK Solbakk, GF Alpert, AJ Furst, LA Hale, T Oga… - Brain research, 2008 - Elsevier
We examined the effects of aging on visuo-spatial attention. Participants performed a bi-field
visual selective attention task consisting of infrequent target and task-irrelevant novel stimuli …

Implicit and explicit processing of kanji and kana words and non-words studied with fMRI

DHD Thuy, K Matsuo, K Nakamura, K Toma, T Oga… - Neuroimage, 2004 - Elsevier
Using functional magnetic resonance imaging (fMRI), we investigated the implicit language
processing of kanji and kana words (ie, hiragana transcriptions of normally written kanji …

Hereditary ceruloplasmin deficiency with hemosiderosis

N Okamoto, S Wada, T Oga, Y Kawabata, Y Baba… - Human genetics, 1996 - Springer
Hereditary ceruloplasmin deficiency with hemosiderosis (aceruloplasminemia) is a new
disease characterized by systemic hemosiderosis, diabetes mellitus, neurological abnormalities …

Modulation of the visual word retrieval system in writing: a functional MRI study on the Japanese orthographies

K Nakamura, M Honda, S Hirano, T Oga… - Journal of Cognitive …, 2002 - direct.mit.edu
We used functional magnetic resonance imaging (fMRI) to examine whether the act of writing
involves different neuro-psychological mechanisms between the two script systems of the …

Second somatosensory area (SII) plays a significant role in selective somatosensory attention

N Fujiwara, M Imai, T Nagamine, T Mima, T Oga… - Cognitive Brain …, 2002 - Elsevier
In order to explore human cortical areas involved in active attention toward a somatosensory
modality, somatosensory evoked cortical magnetic fields were recorded in ten healthy …

Cortical mechanisms of unilateral voluntary motor inhibition in humans

T Begum, T Mima, T Oga, H Hara, T Satow, A Ikeda… - Neuroscience …, 2005 - Elsevier
While motor control is very often a goal-oriented event, little is known about the mechanisms
underlying the termination of motor performance. To investigate what type of cortical …