Temporal dynamics in fMRI resting-state activity

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Temporal dynamics in fMRI resting-state activity.

The Brain as a Dynamical Machine What the brain does is ultimately simple: it takes in sensory information, transforms it into an abstract code of spikes, and uses it to generate motor patterns. This spike code thus constitutes a mental representation of the world, which interacts with memories, expectations, motivations, and other internal states of the animal to generate a series of behaviors...

متن کامل

Unsupervised Learning of Functional Network Dynamics in Resting State fMRI

Research in recent years has provided some evidence of temporal non-stationarity of functional connectivity in resting state fMRI. In this paper, we present a novel methodology that can decode connectivity dynamics into a temporal sequence of hidden network "states" for each subject, using a Hidden Markov Modeling (HMM) framework. Each state is characterized by a unique covariance matrix or who...

متن کامل

Tracking Dynamic Resting-State Networks with High Temporal Resolution fMRI

plot of the average signals in (a) visual (b) sensory-motor networks. Tracking Dynamic Resting-State Networks with High Temporal Resolution fMRI H-L. Lee, B. Zahneisen, T. Grotz, P. LeVan, and J. Hennig Medical Physics, University Medical Center Freiburg, Freiburg, Germany Introduction Resting-state fMRI detects spontaneous BOLD signal fluctuations when no specific cognitive task is being perfo...

متن کامل

Multiregional integration in the brain during resting-state fMRI activity

Data-driven models of functional magnetic resonance imaging (fMRI) activity can elucidate dependencies that involve the combination of multiple brain regions. Activity in some regions during resting-state fMRI can be predicted with high accuracy from the activities of other regions. However, it remains unclear in which regions activity depends on unique integration of multiple predictor regions...

متن کامل

Transient brain activity disentangles fMRI resting-state dynamics in terms of spatially and temporally overlapping networks

Dynamics of resting-state functional magnetic resonance imaging (fMRI) provide a new window onto the organizational principles of brain function. Using state-of-the-art signal processing techniques, we extract innovation-driven co-activation patterns (iCAPs) from resting-state fMRI. The iCAPs' maps are spatially overlapping and their sustained-activity signals temporally overlapping. Decomposin...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2015

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.1505898112