Blind sensor characteristics estimation in a multi-sensor network applied to fMRI analysis

Fabian J. Theis

Blind sensor characteristics estimation in a multi-sensor network applied to fMRI analysis

University of Regensburg

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We propose an algorithm for blindly estimating the sensor characteristics of a multi-sensor network, whose structure is also unknown. From the observed sensor outputs, the non-linearities are recovered using a well-known Gaussianization procedure. The underlying sources are then reconstructed using spatial decorrelation. Application of this robust algorithm to data sets acquired through functional magnetic resonance imaging (fMRI) lead to detect a distinctive 'bump' of the BOLD effect at larger activations.

Original language	English
Title of host publication	Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04
Editors	M. Palaniswami, B. Krishnamachari, A. Sowmya, S. Challa, M. Palaniswami, B. Krishnamachari, A. Sowmya, S. Challa
Pages	223-228
Number of pages	6
State	Published - 2004
Externally published	Yes
Event	2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04 - Melbourne, Australia Duration: 14 Dec 2004 → 17 Dec 2004

Publication series

Name	Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04

Conference

Conference	2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04
Country/Territory	Australia
City	Melbourne
Period	14/12/04 → 17/12/04

Cite this

Theis, F. J. (2004). Blind sensor characteristics estimation in a multi-sensor network applied to fMRI analysis. In M. Palaniswami, B. Krishnamachari, A. Sowmya, S. Challa, M. Palaniswami, B. Krishnamachari, A. Sowmya, & S. Challa (Eds.), Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04 (pp. 223-228). (Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04).

Theis, Fabian J. / Blind sensor characteristics estimation in a multi-sensor network applied to fMRI analysis. Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04. editor / M. Palaniswami ; B. Krishnamachari ; A. Sowmya ; S. Challa ; M. Palaniswami ; B. Krishnamachari ; A. Sowmya ; S. Challa. 2004. pp. 223-228 (Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04).

@inproceedings{08c03df37dd3440790b370f01531391a,

title = "Blind sensor characteristics estimation in a multi-sensor network applied to fMRI analysis",

abstract = "We propose an algorithm for blindly estimating the sensor characteristics of a multi-sensor network, whose structure is also unknown. From the observed sensor outputs, the non-linearities are recovered using a well-known Gaussianization procedure. The underlying sources are then reconstructed using spatial decorrelation. Application of this robust algorithm to data sets acquired through functional magnetic resonance imaging (fMRI) lead to detect a distinctive 'bump' of the BOLD effect at larger activations.",

author = "Theis, {Fabian J.}",

year = "2004",

language = "English",

isbn = "0780388933",

series = "Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04",

pages = "223--228",

editor = "M. Palaniswami and B. Krishnamachari and A. Sowmya and S. Challa and M. Palaniswami and B. Krishnamachari and A. Sowmya and S. Challa",

booktitle = "Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04",

note = "2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04 ; Conference date: 14-12-2004 Through 17-12-2004",

}

Theis, FJ 2004, Blind sensor characteristics estimation in a multi-sensor network applied to fMRI analysis. in M Palaniswami, B Krishnamachari, A Sowmya, S Challa, M Palaniswami, B Krishnamachari, A Sowmya & S Challa (eds), Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04. Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04, pp. 223-228, 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04, Melbourne, Australia, 14/12/04.

Blind sensor characteristics estimation in a multi-sensor network applied to fMRI analysis. / Theis, Fabian J.
Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04. ed. / M. Palaniswami; B. Krishnamachari; A. Sowmya; S. Challa; M. Palaniswami; B. Krishnamachari; A. Sowmya; S. Challa. 2004. p. 223-228 (Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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PY - 2004

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AB - We propose an algorithm for blindly estimating the sensor characteristics of a multi-sensor network, whose structure is also unknown. From the observed sensor outputs, the non-linearities are recovered using a well-known Gaussianization procedure. The underlying sources are then reconstructed using spatial decorrelation. Application of this robust algorithm to data sets acquired through functional magnetic resonance imaging (fMRI) lead to detect a distinctive 'bump' of the BOLD effect at larger activations.

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M3 - Conference contribution

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SN - 9780780388932

T3 - Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04

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BT - Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04

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A2 - Palaniswami, M.

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A2 - Sowmya, A.

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Theis FJ. Blind sensor characteristics estimation in a multi-sensor network applied to fMRI analysis. In Palaniswami M, Krishnamachari B, Sowmya A, Challa S, Palaniswami M, Krishnamachari B, Sowmya A, Challa S, editors, Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04. 2004. p. 223-228. (Proceedings of the 2004 Intelligent Sensors, Sensor Networks and Information Processing Conference, ISSNIP '04).

Blind sensor characteristics estimation in a multi-sensor network applied to fMRI analysis

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