作者: craving 時(shí)間: 2025-3-21 22:11
Principles of Multimodal Functional Imaging and Data Integrationen observable X changes (or event Y occurs)? In the second half of the twentieth century, and particularly since the 1990s, a rapid development of noninvasive functional and structural brain imaging methods has occurred. While some of these developments have resulted from gradual improvements in som作者: 表示問(wèn) 時(shí)間: 2025-3-22 02:15 作者: Androgen 時(shí)間: 2025-3-22 06:08
Locally Measured Neuronal Correlates of Functional MRI Signalsearch. However, current evidence shows that graded increases in neuronal activity evoke a monotonous increase in metabolic and hemodynamic activity. The majority of studies indicate that for stimuli that are several seconds long or longer, this relationship between local neural activity and the fMRI作者: Bumptious 時(shí)間: 2025-3-22 11:51
The Added Value of EEG-fMRI in Imaging Neurosciencemation provided by simultaneously recorded EEG signals into fMRI spatio-temporal modeling. We discuss the problem of optimizing a common source space for fMRI and EEG signal projection through the use of anatomical and functional MRI models and EEG distributed inverse models, thereby gathering a ful作者: ALT 時(shí)間: 2025-3-22 14:49 作者: ALT 時(shí)間: 2025-3-22 17:30
EEG Quality: The Pulse Artifactied into three main categories: temporal waveform-based methods, spatiotemporal pattern-based methods, and sensor-based methods. Approaches based on independent component analysis (ICA) in combination with average artifact subtraction (AAS) have often proved to be the most effective. The use of moti作者: 追逐 時(shí)間: 2025-3-22 21:21
EEG Quality: The Image Acquisition Artefactgradient switching sequence, and therefore artefact correction is generally considered a lesser problem than pulse-related artefacts (see Chap. .). According to Faraday’s law of induction, the induced electromotive force is proportional to the time derivative of the magnetic flux (summation of the m作者: CRUMB 時(shí)間: 2025-3-23 04:51
Image Quality Issuesirection, where RF receiver coil spatial sensitivity is used to encode spatial position in addition to imaging gradients. This can either reduce the slice thickness while maintaining the TR to increase resolution while reducing through-slice dropout or be used to increase scan repetition rate (decre作者: aplomb 時(shí)間: 2025-3-23 09:24
Experimental Design and Data Analysis Strategiese exact same brain state. This is particularly important for spontaneous activities such as epileptic discharges, sleep stages or alpha waves, but also in protocols involving cognitive processes such as memory or attention. It also permits the covariation in single trial fluctuations to be used as a作者: 格子架 時(shí)間: 2025-3-23 13:24 作者: Connotation 時(shí)間: 2025-3-23 14:16
Non-invasive Brain Stimulation with Multimodal Acquisitions manipulation. This chapter introduces the fundamental workings of NIBS and its application in fundamental brain research, rehabilitation and psychiatry and describes the different possibilities of combining brain stimulation and brain imaging with a focus on the methodological and technical challen作者: nutrition 時(shí)間: 2025-3-23 20:54
Brain Rhythms measurement and integrating the analysis of EEG and fMRI data holds the promise to study neural activity related to brain rhythms at excellent spatial resolution and whole brain coverage. In this chapter, we discuss how these combined measurements and analyses have been approached so far. We do thi作者: Hypomania 時(shí)間: 2025-3-23 23:52
Sleepep. Stimulation induces transitory changes with presumably sleep-protective reactions in light NREM sleep and strongly attenuated response during slow-wave sleep. During REM sleep, the phasic and tonic substates possibly reflect distinct cerebral states with complementary responses to the external w作者: 忘恩負(fù)義的人 時(shí)間: 2025-3-24 03:02 作者: 傻瓜 時(shí)間: 2025-3-24 10:15 作者: Phagocytes 時(shí)間: 2025-3-24 14:06
Grundlagen des Versicherungswesens not surprising that the mechanisms of generation and the functional significance of the EEG remained controversial for a relatively long time considering the complexity of the underlying systems of neuronal generators, on the one hand, and the rather involved transfer of signals from the cortical s作者: 慌張 時(shí)間: 2025-3-24 17:08
https://doi.org/10.1007/978-3-7091-4725-2earch. However, current evidence shows that graded increases in neuronal activity evoke a monotonous increase in metabolic and hemodynamic activity. The majority of studies indicate that for stimuli that are several seconds long or longer, this relationship between local neural activity and the fMRI作者: 榨取 時(shí)間: 2025-3-24 21:19 作者: Evocative 時(shí)間: 2025-3-25 02:39 作者: 競(jìng)選運(yùn)動(dòng) 時(shí)間: 2025-3-25 04:23 作者: Fatten 時(shí)間: 2025-3-25 10:46 作者: inquisitive 時(shí)間: 2025-3-25 11:38
irection, where RF receiver coil spatial sensitivity is used to encode spatial position in addition to imaging gradients. This can either reduce the slice thickness while maintaining the TR to increase resolution while reducing through-slice dropout or be used to increase scan repetition rate (decre作者: 斜坡 時(shí)間: 2025-3-25 15:49 作者: 抑制 時(shí)間: 2025-3-25 23:00 作者: forbid 時(shí)間: 2025-3-26 02:48 作者: ABASH 時(shí)間: 2025-3-26 05:57
https://doi.org/10.1007/978-3-658-44290-3 measurement and integrating the analysis of EEG and fMRI data holds the promise to study neural activity related to brain rhythms at excellent spatial resolution and whole brain coverage. In this chapter, we discuss how these combined measurements and analyses have been approached so far. We do thi作者: 流動(dòng)才波動(dòng) 時(shí)間: 2025-3-26 09:38 作者: MELON 時(shí)間: 2025-3-26 13:50 作者: 粗糙 時(shí)間: 2025-3-26 19:48 作者: Exploit 時(shí)間: 2025-3-26 22:02 作者: alleviate 時(shí)間: 2025-3-27 03:23
The Basics of Functional Magnetic Resonance Imagingively. In each case, the respective parameter is introduced quantitatively, including typical values in brain tissue, and the most important measurement techniques are described. The last part introduces the blood oxygenation level-dependent (BOLD) effect, which is the basis of most functional studies.作者: IST 時(shí)間: 2025-3-27 05:40 作者: Chromatic 時(shí)間: 2025-3-27 13:21 作者: 學(xué)術(shù)討論會(huì) 時(shí)間: 2025-3-27 13:47
https://doi.org/10.1007/978-3-7091-2181-8eration based on lesion studies or intracranial measurements. The combination of ERPs and fMRI is successfully used today in terms of adding high spatial information to ERP research. In this chapter, the possibilities and limitations of combining EEG with fMRI are discussed within the historical context of ERP research.作者: white-matter 時(shí)間: 2025-3-27 18:49
What Can fMRI Add to the ERP Story?eration based on lesion studies or intracranial measurements. The combination of ERPs and fMRI is successfully used today in terms of adding high spatial information to ERP research. In this chapter, the possibilities and limitations of combining EEG with fMRI are discussed within the historical context of ERP research.作者: Glycogen 時(shí)間: 2025-3-28 01:36 作者: Femish 時(shí)間: 2025-3-28 05:25 作者: 有毛就脫毛 時(shí)間: 2025-3-28 08:12 作者: 膠水 時(shí)間: 2025-3-28 12:47
Locally Measured Neuronal Correlates of Functional MRI Signalsimuli or experimental tasks. Compared to all other non-invasive functional imaging methods, fMRI has the best spatial specificity relative to the site of changes in neuronal activity. However, fMRI signals are not direct measures of neuronal activity such as action potentials or synaptic activation.作者: pineal-gland 時(shí)間: 2025-3-28 15:13
What Can fMRI Add to the ERP Story?ubjects and in patients with neuropsychiatric diseases, and are still among the mainstays of noninvasive neuroscience. They offer objective measurements of brain activity with a high temporal resolution. However, they are limited concerning their spatial information. Accordingly, several methods hav作者: Connotation 時(shí)間: 2025-3-28 19:35
The Added Value of EEG-fMRI in Imaging Neuroscienceunctional MRI (fMRI) and electro-encephalography (EEG) assume that a given brain state can be decoded from the precise anatomical localization and the detailed temporal evolution of neuro-electrical brain signals, respectively. Mapping brain states with fMRI at a spatial resolution in the millimeter作者: 多樣 時(shí)間: 2025-3-29 02:41 作者: Agronomy 時(shí)間: 2025-3-29 06:08
EEG Quality: The Pulse Artifactllenging problems in simultaneous EEG-fMRI studies. Although the biophysical mechanisms underlying the PA are not yet completely understood, an increasing body of evidence indicates three possible cardiac-related sources: bulk head motion induced by the arrival of blood to the head, pulsatile dilati作者: Ibd810 時(shí)間: 2025-3-29 10:05 作者: ABYSS 時(shí)間: 2025-3-29 13:40 作者: conifer 時(shí)間: 2025-3-29 16:06
EEG-fMRI at Ultrahigh Magnetic Fields: , ≥ 3 Teslaional imaging. Simultaneous EEG-fMRI at high field, therefore, has great potential for neuroscience, as it could take advantage of these gains in SNR to investigate neural activity at new spatial and temporal scales. However, EEG-fMRI at high field poses several major technical challenges. This chap作者: 填料 時(shí)間: 2025-3-29 20:14
Experimental Design and Data Analysis Strategiesatiotemporal properties, with EEG providing millisecond temporal resolution and fMRI millimetre spatial resolution, there has been a drive over the last two decades to record them simultaneously, a technique referred to as simultaneous EEG–fMRI or simply EEG–fMRI. However, acquiring EEG in the MRI s作者: construct 時(shí)間: 2025-3-30 00:01 作者: 有助于 時(shí)間: 2025-3-30 05:20 作者: aggressor 時(shí)間: 2025-3-30 12:01
Brain Rhythms different rhythmic phenomena have been studied not only by EEG but also by MEG and invasive intracranial recordings in patient populations and animals. This has yielded a wide body of knowledge on which types of rhythmic activity can be recorded, under which circumstances they occur, how they can b作者: PALMY 時(shí)間: 2025-3-30 14:09
Sleepelectrophysiological measures are sleeping states unambiguously defined. The fMRI environment unfortunately hampers natural sleep due to the associated noise levels and the restrictions on body posture. Nevertheless, numerous groups successfully conducted multimodal fMRI experiments during human sle作者: 中子 時(shí)間: 2025-3-30 17:09 作者: 誤傳 時(shí)間: 2025-3-30 21:29
http://image.papertrans.cn/e/image/300358.jpg作者: 好開(kāi)玩笑 時(shí)間: 2025-3-31 01:58 作者: INTER 時(shí)間: 2025-3-31 05:46
978-3-031-07123-2Springer Nature Switzerland AG 2022作者: BROOK 時(shí)間: 2025-3-31 12:29
Grundlagen des Operations Research 3r. Therefore, achieving the ultimate aim of a complete understanding of brain events and brain activity in general will require the integration of a variety of observations related to these events. Multimodal imaging, or more generally measurements whereby data from various types of instruments are 作者: PRE 時(shí)間: 2025-3-31 13:52
Grundlagen des Versicherungswesense demonstration that the EEG could be recorded from the human scalp by Berger in the 1920s, it made a slow start before it became accepted as a method of analysis of brain functions in health and disease. It is interesting to note that this acceptance came only after the demonstration by Adrian and 作者: SEEK 時(shí)間: 2025-3-31 19:25 作者: diathermy 時(shí)間: 2025-3-31 22:45
https://doi.org/10.1007/978-3-7091-4725-2imuli or experimental tasks. Compared to all other non-invasive functional imaging methods, fMRI has the best spatial specificity relative to the site of changes in neuronal activity. However, fMRI signals are not direct measures of neuronal activity such as action potentials or synaptic activation.作者: 好開(kāi)玩笑 時(shí)間: 2025-4-1 03:07 作者: nerve-sparing 時(shí)間: 2025-4-1 08:30
https://doi.org/10.1007/978-3-642-50677-2unctional MRI (fMRI) and electro-encephalography (EEG) assume that a given brain state can be decoded from the precise anatomical localization and the detailed temporal evolution of neuro-electrical brain signals, respectively. Mapping brain states with fMRI at a spatial resolution in the millimeter
