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Article: Interest of eye movement study in early diagnosis of posterior cortical atrophy: A case-report.

Pin, G / Trompette, C / Ceccaldi, M / Felician, O / Koric, L

2023 Volume 179, Issue 3, Page(s) 246–248

MeSH term(s)	Humans ; Eye Movements ; Alzheimer Disease/diagnosis ; Atrophy/pathology ; Early Diagnosis ; Cerebral Cortex/pathology ; Neuropsychological Tests
Language	English
Publishing date	2023-02-06
Publishing country	France
Document type	Case Reports ; Letter
ZDB-ID	4593-7
ISSN	2213-0004 ; 0035-3787
ISSN (online)	2213-0004
ISSN	0035-3787
DOI	10.1016/j.neurol.2022.10.007
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Article: Femtosecond dynamics of Cu(H(2)O)(2).

Taylor, Mark S / Barbera, Jack / Schulz, Claus-Peter / Muntean, Felician / McCoy, Anne B / Lineberger, W Carl

The Journal of chemical physics

2005 Volume 122, Issue 5, Page(s) 54310

Abstract: The ultrafast relaxation dynamics of Cu(H(2)O)(2) is investigated using femtosecond photodetachment ... photoionization spectroscopy. In addition, stationary points on the Cu(H(2)O)(2) anion, neutral, and cation ... photodetachment from Cu(-)(H(2)O)(2) initiates the dynamics on the ground-state potential energy surface ...

Abstract	The ultrafast relaxation dynamics of Cu(H(2)O)(2) is investigated using femtosecond photodetachment-photoionization spectroscopy. In addition, stationary points on the Cu(H(2)O)(2) anion, neutral, and cation potential energy surfaces are characterized by ab initio electronic structure calculations. Electron photodetachment from Cu(-)(H(2)O)(2) initiates the dynamics on the ground-state potential energy surface of neutral Cu(H(2)O)(2). The resulting Cu(H(2)O)(2) complexes experience large-amplitude H(2)O reorientation and dissociation. The time evolution of the Cu(H(2)O)(2) fragmentation products is monitored by time-resolved resonant multiphoton ionization. The parent ion, Cu(+)(H(2)O)(2), is not detected above background levels. The rise to a maximum of the Cu(+) signal from Cu(-)(H(2)O)(2), and the decay of the Cu(+)(H(2)O) signal from Cu(-)(H(2)O)(2) have similar tau approximately 10 ps time dependences to the corresponding signals from Cu(-)(H(2)O), but display clear differences at very short and long times. The experimental observations can be understood in terms of the following picture. Prompt dissociation of H(2)O from nascent Cu(H(2)O)(2) gives rise to a vibrationally excited Cu(H(2)O) complex, which dissociates to Cu+H(2)O due to coupling of H(2)O internal rotation to the dissociation coordinate. This prompt dissociation removes all intra-H(2)O vibrational excitation from the intermediate Cu(H(2)O) fragment, which quenches the long time vibrational predissociation to Cu+H(2)O previously observed in analogous experiments on Cu(-)(H(2)O).
Language	English
Publishing date	2005-02-01
Publishing country	United States
Document type	Journal Article
ZDB-ID	3113-6
ISSN	1089-7690 ; 0021-9606
ISSN (online)	1089-7690
ISSN	0021-9606
DOI	10.1063/1.1836759
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Article: Femtosecond study of Cu(H(2)O) dynamics.

Muntean, Felician / Taylor, Mark S / McCoy, Anne B / Lineberger, W Carl

The Journal of chemical physics

2004 Volume 121, Issue 12, Page(s) 5676–5687

Abstract: The short-time nuclear dynamics of Cu(H(2)O) is investigated using femtosecond photodetachment ... photoionization spectroscopy and time-dependent quantum wave packet calculations. The Cu(H(2)O) dynamics is ... initiated in the electronic ground state of the complex by electron photodetachment from the Cu(-)(H(2)O ...

Abstract	The short-time nuclear dynamics of Cu(H(2)O) is investigated using femtosecond photodetachment-photoionization spectroscopy and time-dependent quantum wave packet calculations. The Cu(H(2)O) dynamics is initiated in the electronic ground state of the complex by electron photodetachment from the Cu(-)(H(2)O) complex, where hydrogen atoms are oriented toward Cu. Several time-resolved resonant multiphoton ionization schemes are used to probe the ensuing reorientation and dissociation. Immediately following photodetachment, the neutral complex is far from its minimum energy geometry and possesses an internal energy comparable to the Cu-H(2)O dissociation energy and undergoes both large-amplitude H(2)O motion and dissociation. Dissociation is observed to occur on three distinct time scales: 0.6, 8, and 100 ps. These results are compared to the results of time-dependent J=0 wave packet calculations, propagating the initial anion vibrational wave functions on the ground-state potential of the neutral complex. An excellent agreement is obtained between the experimental results and the ionization signals derived from the calculated probability amplitudes. Related experiments and calculations are carried out on the Cu(D(2)O) complex, with results very similar to those of Cu(H(2)O).
MeSH term(s)	Computer Simulation ; Copper/chemistry ; Copper/radiation effects ; Hydroxides/chemistry ; Hydroxides/radiation effects ; Kinetics ; Light ; Models, Chemical ; Models, Molecular ; Photochemistry/methods ; Time Factors
Chemical Substances	Hydroxides ; copper hydroxide ; Copper (789U1901C5)
Language	English
Publishing date	2004-09-22
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	3113-6
ISSN	1089-7690 ; 0021-9606
ISSN (online)	1089-7690
ISSN	0021-9606
DOI	10.1063/1.1782176
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Article ; Online: Beyond sense-specific processing: decoding texture in the brain from touch and sonified movement.

Landelle, C / Caron-Guyon, J / Nazarian, B / Anton, J L / Sein, J / Pruvost, L / Amberg, M / Giraud, F / Félician, O / Danna, J / Kavounoudias, A

iScience

2023 Volume 26, Issue 10, Page(s) 107965

Abstract: Texture, a fundamental object attribute, is perceived through multisensory information including touch and auditory cues. Coherent perceptions may rely on shared texture representations across different senses in the brain. To test this hypothesis, we ... ...

Abstract	Texture, a fundamental object attribute, is perceived through multisensory information including touch and auditory cues. Coherent perceptions may rely on shared texture representations across different senses in the brain. To test this hypothesis, we delivered haptic textures coupled with a sound synthesizer to generate real-time textural sounds. Participants completed roughness estimation tasks with haptic, auditory, or bimodal cues in an MRI scanner. Somatosensory, auditory, and visual cortices were all activated during haptic and auditory exploration, challenging the traditional view that primary sensory cortices are sense-specific. Furthermore, audio-tactile integration was found in secondary somatosensory (S2) and primary auditory cortices. Multivariate analyses revealed shared spatial activity patterns in primary motor and somatosensory cortices, for discriminating texture across both modalities. This study indicates that primary areas and S2 have a versatile representation of multisensory textures, which has significant implications for how the brain processes multisensory cues to interact more efficiently with our environment.
Language	English
Publishing date	2023-09-20
Publishing country	United States
Document type	Journal Article
ISSN	2589-0042
ISSN (online)	2589-0042
DOI	10.1016/j.isci.2023.107965
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Article ; Online: The Extrastriate Body Area and identity processing: An fMRI guided TMS study.

Pann, Alizée / Bonnard, Mireille / Felician, Olivier / Romaiguère, Patricia

Physiological reports

2021 Volume 9, Issue 8, Page(s) e14711

Abstract: The extrastriate body area (EBA) is a body-selective focal region located in the lateral occipito-temporal cortex that responds strongly to images of human bodies and body parts in comparison with other classes of stimuli. Whether EBA contributes also to ...

Abstract	The extrastriate body area (EBA) is a body-selective focal region located in the lateral occipito-temporal cortex that responds strongly to images of human bodies and body parts in comparison with other classes of stimuli. Whether EBA contributes also to the body recognition of self versus others remains in debate. We investigated whether EBA contributes to self-other distinction and whether there might be a hemispheric-side specificity to that contribution using double-pulse transcranial magnetic stimulation (TMS) in right-handed participants. Prior to the TMS experiment, all participants underwent an fMRI localizer task to determine individual EBA location. TMS was then applied over either right EBA, left EBA or vertex, while participants performed an identification task in which images of self or others' right, or left hands were presented. TMS over both EBAs slowed responses, with no identity-specific effect. However, TMS applied over right EBA induced significantly more errors on other's hands than noTMS, TMS over left EBA or over the Vertex, when applied at 100-110 ms after image onset. The last three conditions did not differ, nor was there any difference for self-hands. These findings suggest that EBA participates in self/other discrimination.
MeSH term(s)	Adult ; Body Image ; Brain/physiology ; Female ; Functional Laterality ; Humans ; Magnetic Resonance Imaging ; Male ; Pattern Recognition, Visual ; Transcranial Magnetic Stimulation
Language	English
Publishing date	2021-05-02
Publishing country	United States
Document type	Journal Article
ZDB-ID	2724325-4
ISSN	2051-817X ; 2051-817X
ISSN (online)	2051-817X
ISSN	2051-817X
DOI	10.14814/phy2.14711
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Article ; Online: Brain FDG-PET correlates of saccadic disorders in early PSP.

Pin, G / Labouré, J / Guedj, E / Felician, O / Grimaldi, S / Azulay, J P / Ceccaldi, M / Koric, L

Journal of neurology

2023 Volume 270, Issue 10, Page(s) 4841–4850

Abstract: Background: New diagnostic criteria of Progressive Supranuclear Palsy (PSP) have highlighted the interest of Eye Movement Records (EMR) at the early stage of the disease.: Objectives: To investigate the metabolic brain correlates of ocular motor ... ...

Abstract	Background: New diagnostic criteria of Progressive Supranuclear Palsy (PSP) have highlighted the interest of Eye Movement Records (EMR) at the early stage of the disease. Objectives: To investigate the metabolic brain correlates of ocular motor dysfunction using [18F] Fluorodeoxyglucose Positron Emission Tomography (FDG-PET) in early PSP. Methods: Retrospective observational descriptive study on longitudinal data with patients who underwent EMR and FDG-PET at the stage of suggestive and possible PSP according to Movement Disorders Society criteria. Longitudinal follow-up enables to confirm diagnosis of probable PSP. Using the Statistical Parametric Mapping software, we performed whole-brain voxel-based correlations between oculomotor variables and FDG-PET metabolism. Results: Thirty-seven patients with early PSP who fulfilled criteria of probable PSP during the follow-up were included. Decrease in the gain of vertical saccades correlated with reduced metabolism in Superior Colliculi (SC). We also found a positive correlation between mean velocity of horizontal saccades and SC metabolism as well as dorsal nuclei in the pons. Finally, increase in horizontal saccades latencies correlated with decrease of posterior parietal metabolism. Conclusions: These findings suggest the early involvement of SC in saccadic dysfunction in the course of PSP.
MeSH term(s)	Humans ; Fluorodeoxyglucose F18/metabolism ; Retrospective Studies ; Saccades ; Brain ; Supranuclear Palsy, Progressive/diagnosis ; Positron-Emission Tomography/methods
Chemical Substances	Fluorodeoxyglucose F18 (0Z5B2CJX4D)
Language	English
Publishing date	2023-06-18
Publishing country	Germany
Document type	Journal Article
ZDB-ID	187050-6
ISSN	1432-1459 ; 0340-5354 ; 0012-1037 ; 0939-1517 ; 1619-800X
ISSN (online)	1432-1459
ISSN	0340-5354 ; 0012-1037 ; 0939-1517 ; 1619-800X
DOI	10.1007/s00415-023-11824-w
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Article: A theoretical and computational study of the anion, neutral, and cation Cu(H(2)O) complexes.

Taylor, Mark S / Muntean, Felician / Lineberger, W Carl / McCoy, Anne B

The Journal of chemical physics

2004 Volume 121, Issue 12, Page(s) 5688–5699

Abstract: ... functions of the anion, neutral, and cation Cu(H(2)O) complexes is presented. The equilibrium geometries and ... harmonic frequencies of the three charge states of Cu(H(2)O) are calculated at the MP2 level of theory ... energies D(0) of the anion, neutral, and cation charge states of Cu(H(2)O) are predicted to be 0.39, 0.16 ...

Abstract	An ab initio investigation of the potential energy surfaces and vibrational energies and wave functions of the anion, neutral, and cation Cu(H(2)O) complexes is presented. The equilibrium geometries and harmonic frequencies of the three charge states of Cu(H(2)O) are calculated at the MP2 level of theory. CCSD(T) calculations predict a vertical electron detachment energy for the anion complex of 1.65 eV and a vertical ionization potential for the neutral complex of 6.27 eV. Potential energy surfaces are calculated for the three charge states of the copper-water complexes. These potential energy surfaces are used in variational calculations of the vibrational wave functions and energies and from these, the dissociation energies D(0) of the anion, neutral, and cation charge states of Cu(H(2)O) are predicted to be 0.39, 0.16, and 1.74 eV, respectively. In addition, the vertical excitation energies, that correspond to the 4 (2)P<--4 (2)S transition of the copper atom, and ionization potentials of the neutral Cu(H(2)O) are calculated over a range of Cu(H(2)O) configurations. In hydrogen-bonded, Cu-HOH configurations, the vertical excitation and ionization energies are blueshifted with respect to the corresponding values for atomic copper, and in Cu-OH(2) configurations where the copper atom is located near the oxygen end of water, both quantities are redshifted.
MeSH term(s)	Anions ; Cations ; Computer Simulation ; Copper/chemistry ; Copper/radiation effects ; Electrochemistry/methods ; Hydroxides/chemistry ; Hydroxides/radiation effects ; Kinetics ; Light ; Models, Chemical ; Models, Molecular ; Photochemistry/methods ; Static Electricity ; Time Factors
Chemical Substances	Anions ; Cations ; Hydroxides ; copper hydroxide ; Copper (789U1901C5)
Language	English
Publishing date	2004-09-22
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	3113-6
ISSN	1089-7690 ; 0021-9606
ISSN (online)	1089-7690
ISSN	0021-9606
DOI	10.1063/1.1782191
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Article ; Online: Interlimb Transfer of Reach Adaptation Does Not Require an Intact Corpus Callosum: Evidence from Patients with Callosal Lesions and Agenesis.

Tilsley, Penelope A / Romaiguère, Patricia / Tramoni, Eve / Felician, Olivier / Sarlegna, Fabrice R

eNeuro

2021 Volume 8, Issue 4

Abstract: Generalization of sensorimotor adaptation across limbs, known as interlimb transfer, is a well-demonstrated phenomenon in humans, yet the underlying neural mechanisms remain unclear. Theoretical models suggest that interlimb transfer is mediated by ... ...

Abstract	Generalization of sensorimotor adaptation across limbs, known as interlimb transfer, is a well-demonstrated phenomenon in humans, yet the underlying neural mechanisms remain unclear. Theoretical models suggest that interlimb transfer is mediated by interhemispheric transfer of information via the corpus callosum. We thus hypothesized that lesions of the corpus callosum, especially to its midbody connecting motor, supplementary motor, and premotor areas of the two cerebral hemispheres, would impair interlimb transfer of sensorimotor adaptation. To test this hypothesis, we recruited three patients: two rare stroke patients with recent, extensive callosal lesions including the midbody and one patient with complete agenesis. A prismatic adaptation paradigm involving unconstrained arm reaching movements was designed to assess interlimb transfer from the prism-exposed dominant arm (DA) to the unexposed non-dominant arm (NDA) for each participant. Baseline results showed that spatial performance of each patient did not significantly differ from controls, for both limbs. Further, each patient adapted to the prismatic perturbation, with no significant difference in error reduction compared with controls. Crucially, interlimb transfer was found in each patient. The absolute magnitude of each patient's transfer did not significantly differ from controls. These findings show that sensorimotor adaptation can transfer across limbs despite extensive lesions or complete absence of the corpus callosum. Therefore, callosal pathways connecting homologous motor, premotor, and supplementary motor areas are not necessary for interlimb transfer of prismatic reach adaptation. Such interlimb transfer could be mediated by transcallosal splenium pathways (connecting parietal, temporal and visual areas), ipsilateral cortico-spinal pathways or subcortical structures such as the cerebellum.
MeSH term(s)	Adaptation, Physiological ; Corpus Callosum ; Functional Laterality ; Generalization, Psychological ; Humans ; Motor Cortex
Language	English
Publishing date	2021-07-26
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2800598-3
ISSN	2373-2822 ; 2373-2822
ISSN (online)	2373-2822
ISSN	2373-2822
DOI	10.1523/ENEURO.0190-20.2021
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Article ; Online: In response: transient epileptic amnesia.

Bartolomei, Fabrice / Tramoni, Eve / Félician, Olivier

Epilepsia

2014 Volume 55, Issue 10, Page(s) 1678

MeSH term(s)	Amnesia, Anterograde/diagnosis ; Amnesia, Anterograde/psychology ; Energy Metabolism/physiology ; Executive Function/physiology ; Female ; Fluorodeoxyglucose F18 ; Humans ; Male ; Memory, Episodic ; Neuropsychological Tests ; Positron-Emission Tomography ; Temporal Lobe/physiopathology
Chemical Substances	Fluorodeoxyglucose F18 (0Z5B2CJX4D)
Language	English
Publishing date	2014-10
Publishing country	United States
Document type	Comment ; Letter
ZDB-ID	216382-2
ISSN	1528-1167 ; 0013-9580
ISSN (online)	1528-1167
ISSN	0013-9580
DOI	10.1111/epi.12746
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Article: Progressive supranuclear palsy and corticobasal degeneration: Diagnostic challenges and clinicopathological considerations.

Eusebio, A / Koric, L / Félician, O / Guedj, E / Ceccaldi, M / Azulay, J-P

Revue neurologique

2016 Volume 172, Issue 8-9, Page(s) 488–502

Abstract: Progressive supranuclear palsy (PSP) and corticobasal degeneration (CBD) are two atypical parkinsonian syndromes first described half a century ago. The spectrum of these conditions as well as, more generally, the concept of tauopathy have dramatically ... ...

Abstract	Progressive supranuclear palsy (PSP) and corticobasal degeneration (CBD) are two atypical parkinsonian syndromes first described half a century ago. The spectrum of these conditions as well as, more generally, the concept of tauopathy have dramatically changed over the past decade and especially in recent years. In particular, clinicopathological correlations have led to the description of several subtypes of these diseases and the features they share with other neurodegenerative diseases. The present paper is a review of how the concepts of PSP and CBD have evolved over time. In particular, it focuses on the different presentations of the disease and the overlapping syndromes that can complicate the differential diagnoses. Also discussed are some of the tools that may prove useful in making a diagnosis. Indeed, differential diagnosis issues are of particular importance in light of the likely emergence of pathology-specific disease-modifying therapies in the near future.
MeSH term(s)	Basal Ganglia/pathology ; Basal Ganglia Diseases/diagnosis ; Basal Ganglia Diseases/etiology ; Basal Ganglia Diseases/therapy ; Diagnosis, Differential ; Humans ; Neurodegenerative Diseases/diagnosis ; Neurodegenerative Diseases/etiology ; Neurodegenerative Diseases/therapy ; Parkinsonian Disorders/complications ; Parkinsonian Disorders/diagnosis ; Parkinsonian Disorders/therapy ; Supranuclear Palsy, Progressive/diagnosis ; Supranuclear Palsy, Progressive/etiology ; Supranuclear Palsy, Progressive/therapy ; Tauopathies/complications ; Tauopathies/diagnosis ; Tauopathies/therapy
Language	English
Publishing date	2016-08
Publishing country	France
Document type	Journal Article ; Review
ZDB-ID	4593-7
ISSN	2213-0004 ; 0035-3787
ISSN (online)	2213-0004
ISSN	0035-3787
DOI	10.1016/j.neurol.2016.07.009
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