Search Results - "Lounasmaa, O. V."

Dynamics of brain activation during picture naming by Salmelin, R, Hari, R, Lounasmaa, O. V, Sams, M

“…The cerebral representation of language, deduced from observing patients with brain lesions and from stimulations and recordings performed during brain…”
Get full text

Face-specific responses from the human inferior occipito-temporal cortex by Sams, M, Hietanen, J.K, Hari, R, Ilmoniemi, R.J, Lounasmaa, O.V

“…Whole-head neuromagnetic responses were recorded from seven subjects to pictures of faces and to various control stimuli. Four subjects displayed signals…”
Get full text

Nuclear magnetic ordering in simple metals at positive and negative nanokelvin temperatures by Oja, A. S., Lounasmaa, O. V.

Get full text

Information Processing in the Human Brain: Magnetoencephalographic Approach by Lounasmaa, Olli V., Hämäläinen, Matti, Hari, Riitta, Salmelin, Riitta

“…Rapid progress in effective methods to image brain functions has revolutionized neuroscience. It is now possible to study noninvasively in humans neural…”
Get full text

Observation of nuclear ferromagnetic ordering in silver at negative nanokelvin temperatures by HAKONEN, P. J, NUMMILA, K. K, VUORINEN, R. T, LOUNASMAA, O. V

“…The ferromagnetically ordered state in the nuclear spin system of Ag has been reached at negative absolute temperatures by adiabatic nuclear demagnetization at…”
Get full text

Responses of the human auditory cortex to vowel onset after fricative consonants by KAUKORANTA, E, HARI, R, LOUNASMAA, O. V

“…Neuromagnetic responses to different auditory stimuli (noise bursts and short speech stimuli) were mapped over both hemispheres of seven healthy subjects. The…”
Get full text

122-channel squid instrument for investigating the magnetic signals from the human brain by Ahonen, A I, Hämäläinen, M S, Kajola, M J, Knuutila, J E T, Laine, P P, Lounasmaa, O V, Parkkonen, L T, Simola, J T, Tesche, C D

Get full text

Nuclear magnetism in silver at positive and negative absolute temperatures in the low nanokelvin range by HAKONEN, P. J, YIN, S, LOUNASMAA, O. V

Get full text

Magnetoencephalography-theory, instrumentation, and applications to noninvasive studies of the working human brain by HÄMÄLÄINEN, M, HARI, R, ILMONIEMI, R. J, KNUUTILA, J, LOUNASMAA, O. V

“…Magnetoencephalography (MEG) is a noninvasive technique for investigating neuronal activity in the living human brain. The time resolution of the method is…”
Get full text

Seeing faces activates three separate areas outside the occipital visual cortex in man by Lu, S T, Hämäläinen, M S, Hari, R, Ilmoniemi, R J, Lounasmaa, O V, Sams, M, Vilkman, V

“…We have examined magnetic cortical responses of 15 healthy humans to 46 different pictures of faces. At least three areas outside the occipital visual cortex…”
Get more information

A versatile nuclear demagnetization cryostat for ultralow temperature research by YAO, W, KNUUTTILA, T. A, NUMMILA, K. K, MARTIKAINEN, J. E, OJA, A. S, LOUNASMAA, O. V

Get full text

Phonetic invariance in the human auditory cortex by Aulanko, R, Hari, R, Lounasmaa, O V, Näätänen, R, Sams, M

“…Neuromagnetic signals evoked by synthesized syllables (/bae/ and /gae/) were recorded over the left auditory cortex of healthy humans. The fundamental…”
Get more information

Negative Absolute Temperatures: "Hot" Spins in Spontaneous Magnetic Order by Hakonen, Pertti, Lounasmaa, Olli V.

“…Depending on the sign of the spin temperature in the picokelvin range, antiferromagnetic nuclear and ferromagnetic nuclear orders in silver are caused by the…”
Get full text

A 122-channel whole-cortex SQUID system for measuring the brain's magnetic fields by Knuutila, J.E.T., Ahonen, A.I., Hamalainen, M.S., Kajola, M.J., Laine, P.P., Lounasmaa, O.V., Parkkonen, L.T., Simola, J.T.A., Tesche, C.D.

“…A 122-channel neuromagnetometer with a helmet-shaped detector array covering the entire head allows simultaneous recording of magnetic fields over the whole…”
Get full text

Observation of nuclear antiferromagnetic order in copper by neutron diffraction at nanokelvin temperatures by JYRKKIO, T. A, HUIKU, M. T, LOUNASMAA, O. V, SIEMENSMEYER, K, KAKURAI, K, STEINER, M, CLAUSEN, K. N, KJEMS, J. K

“…Long-range nuclear antiferromagnetic order in the nuclear-spin system of a exp 65 Cu single crystal has been observed by neutron diffraction. By use of a…”
Get full text

Nuclear order in copper: new type of antiferromagnetism in an ideal fcc system by ANNILA, A. J, CLAUSEN, K. N, LINDGARD, P.-A, LOUNASMAA, O. V, OJA, A. S, SIEMENSMEYER, K, STEINER, M, TUORINIEMI, J. T, WEINFURTER, H

Get full text

Multichannel SQUID systems for brain research by Ahonen, A.I., Hamalainen, M.S., Kajola, M.J., Knuutila, J.E.T., Lounasmaa, O.V., Simola, J.T., Tesche, C.D., Vilkman, V.A.

“…Basic principles of magnetoencephalography (MEG) and neuromagnetic instrumentation are briefly reviewed. A 24-channel system based on planar gradiometer coils…”
Get full text

Parietal epileptic mirror focus detected with a whole-head neuromagnetometer by Hari, R, Ahonen, A, Forss, N, Granström, M L, Hämäläinen, M, Kajola, M, Knuutila, J, Lounasmaa, O V, Mäkelä, J P, Paetau, R

“…Whole-head magnetoencephalographic recordings revealed two parietal epileptic foci in homotopic areas of the hemispheres. The discharges occurred 17-20 ms…”
Get more information

Investigations of nuclear antiferromagnetic ordering in copper at nanokelvin temperatures by HUIKU, M. T, JYRKKIO, T. A, KYYNÄRÄINEN, J. M, LOPONEN, M. T, LOUNASMAA, O. V, OJA, A. S

“…Nuclear magnetism in metallic copper has been studied by demagnetizing highly polarized spins to low fields where spin-spin interactions dominate. In earlier…”
Get full text

Neutron studies of nuclear magnetism at ultralow temperature by Siemensmeyer, K, Clausen, K.N, Lefmann, K, Lounasmaa, O.V, Metz, A, Nummila, K.K, Rasmussen, F.B, Steiner, M, Tuoriniemi, J.T, Vuorinen, R.T

“…Nuclear magnetic order in copper and silver has been investigated by neutron diffraction. Antiferromagnetic order is observed in these simple, diamagnetic…”
Get full text