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6. Deep Learning Based Walking Tasks Classification in Older Adults using fNIRS

Author

Ma, Dongning, Izzetoglu, Meltem, Holtzer, Roee, and Jiao, Xun

Subjects
Computer Science - Machine Learning
Abstract

Decline in gait features is common in older adults and an indicator of increased risk of disability, morbidity, and mortality. Under dual task walking (DTW) conditions, further degradation in the performance of both the gait and the secondary cognitive task were found in older adults which were significantly correlated to falls history. Cortical control of gait, specifically in the pre-frontal cortex (PFC) as measured by functional near infrared spectroscopy (fNIRS), during DTW in older adults has recently been studied. However, the automatic classification of differences in cognitive activations under single and dual task gait conditions has not been extensively studied yet. In this paper, we formulate this as a classification task and leverage deep learning to perform automatic classification of STW, DTW and single cognitive task (STA). We conduct analysis on the data samples which reveals the characteristics on the difference between HbO2 and Hb values that are subsequently used as additional features. We perform feature engineering to formulate the fNIRS features as a 3-channel image and apply various image processing techniques for data augmentation to enhance the performance of deep learning models. Experimental results show that pre-trained deep learning models that are fine-tuned using the collected fNIRS dataset together with gender and cognitive status information can achieve around 81\% classification accuracy which is about 10\% higher than the traditional machine learning algorithms. We further perform an ablation study to identify rankings of features such as the fNIRS levels and/or voxel locations on the contribution of the classification task.

Published
2021

8. Exploring Relationship Between Driver’s Behavior and Cognitive Measures Observed by fNIRS in a Driving Simulator

Author

Izzetoglu, Meltem, Park, Seri, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Schmorrow, Dylan D., editor, and Fidopiastis, Cali M., editor

Published
2021
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11. The impact of music making on neural efficiency & dual-task walking performance in healthy older adults.

Author

Jacobs, Sydney, Izzetoglu, Meltem, and Holtzer, Roee

Subjects
*OLDER people, *DUAL-task paradigm, *EXECUTIVE function, *MUSICAL perception, *COGNITIVE interference, *MUSICAL pitch
Abstract

Music making is linked to improved cognition and related neuroanatomical changes in children and adults; however, this has been relatively under-studied in aging. The purpose of this study was to assess neural, cognitive, and physical correlates of music making in aging using a dual-task walking (DTW) paradigm. Study participants (N = 415) were healthy adults aged 65 years or older, including musicians (n = 70) who were identified by current weekly engagement in musical activity. A DTW paradigm consisting of single- and dual-task conditions, as well as portable neuroimaging (functional near-infrared spectroscopy), was administered. Outcome measures included neural activation in the prefrontal cortex assessed across task conditions by recording changes in oxygenated hemoglobin, cognitive performance, and gait velocity. Linear mixed effects models examined the impact of music making on outcome measures in addition to moderating their change between task conditions. Across participants (53.3% women; 76 ± 6.55 years), neural activation increased from single- to dual-task conditions (p < 0.001); however, musicians demonstrated attenuated activation between a single cognitive interference task and dual-task walking (p = 0.014). Musicians also displayed significantly smaller decline in behavioral performance (p < 0.001) from single- to dual-task conditions and faster gait overall (p = 0.014). Given evidence of lower prefrontal cortex activation in the context of similar or improved behavioral performance, results indicate the presence of enhanced neural efficiency in older adult musicians. Furthermore, improved dual-task performance in older adult musicians was observed. Results have important clinical implications for healthy aging, as executive functioning plays an essential role in maintaining functional ability in older adulthood. [ABSTRACT FROM AUTHOR]

Published
2024
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17. A Validation Study of a Middle Grades Reading Comprehension Assessment

Author

Severino, Lori, Tecce DeCarlo, Mary Jean, Sondergeld, Toni, Izzetoglu, Meltem, and Ammar, Alia

Abstract

A student's reading skill is essential to learning. Assessing reading skills, specifically comprehension, is difficult. In the middle grades, students read to learn; and their teachers need a quick, easy assessment that provides immediate data on reading comprehension skill. This study explores the holistic validation approach of one eighth-grade informational text with comprehension questions currently included in the Adolescent Comprehension Evaluation (ACE). Thirty-three eighth-grade students from four different schools participated in the study. Multiple forms of validity evidence were used including test content, response process, internal structure, relationship to other variables, and consequences of testing. These multiple forms of validity evidence provided the researchers with insights into comprehension questions that would not have been uncovered using psychometric means of validation alone. The results of this study support ACE as a direct measure of middle grades students' reading comprehension.

Published
2018
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20. Cortical thickness moderates intraindividual variability in prefrontal cortex activation patterns of older adults during walking.

Author

Ross, Daliah, Wagshul, Mark E., Izzetoglu, Meltem, and Holtzer, Roee

Subjects
OLDER people, PREFRONTAL cortex, CEREBRAL cortex, CEREBRAL cortical thinning, NEAR infrared spectroscopy
Abstract

Objective: Increased intraindividual variability (IIV) in behavioral and cognitive performance is a risk factor for adverse outcomes but research concerning hemodynamic signal IIV is limited. Cortical thinning occurs during aging and is associated with cognitive decline. Dual-task walking (DTW) performance in older adults has been related to cognition and neural integrity. We examined the hypothesis that reduced cortical thickness would be associated with greater increases in IIV in prefrontal cortex oxygenated hemoglobin (HbO2) from single tasks to DTW in healthy older adults while adjusting for behavioral performance. Method: Participants were 55 healthy community-dwelling older adults (mean age = 74.84, standard deviation (SD) = 4.97). Structural MRI was used to quantify cortical thickness. Functional near-infrared spectroscopy (fNIRS) was used to assess changes in prefrontal cortex HbO2 during walking. HbO2 IIV was operationalized as the SD of HbO2 observations assessed during the first 30 seconds of each task. Linear mixed models were used to examine the moderation effect of cortical thickness throughout the cortex on HbO2 IIV across task conditions. Results: Analyses revealed that thinner cortex in several regions was associated with greater increases in HbO2 IIV from the single tasks to DTW (ps <.02). Conclusions: Consistent with neural inefficiency, reduced cortical thickness in the PFC and throughout the cerebral cortex was associated with increases in HbO2 IIV from the single tasks to DTW without behavioral benefit. Reduced cortical thickness and greater IIV of prefrontal cortex HbO2 during DTW may be further investigated as risk factors for developing mobility impairments in aging. [ABSTRACT FROM AUTHOR]

Published
2024
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26. List of Contributors

Author

Agbangla, Nounagnon F., primary, Agrali, Atahan, additional, Albinet, Cédric T., additional, Aljuaid, Awad, additional, Andéol, Guillaume, additional, André, Jean M., additional, Aricò, Pietro, additional, Arnaud, Branthomme, additional, Artico, Romain, additional, Audiffren, Michel, additional, Ayaz, Hasan, additional, Babiloni, Fabio, additional, Baccus, Wendy, additional, Baldwin, Carryl L., additional, Banville, Hubert, additional, Bengler, Klaus, additional, Berberian, Bruno, additional, Bergeron-Boucher, Jérémy, additional, Berkol, Ali, additional, Besson, Pierre, additional, Bhatt, Siddharth, additional, Bichicchi, Arianna, additional, Bijlsma, Martijn, additional, Bode, Nikolai W.F., additional, Bonnemains, Vincent, additional, Borghini, Gianluca, additional, Borragán, Guillermo, additional, Bouchard, Marc-André, additional, Bovo, Angela, additional, Brangier, Eric, additional, Brouwer, Anne-Marie, additional, Bülthoff, Heinrich H., additional, Burns, Christopher, additional, Cabibel, Vincent, additional, Çakar, Tuna E., additional, Callan, Daniel, additional, Campagne, Aurélie, additional, Carlson, Travis, additional, Casebeer, William D., additional, Çelik, Deniz Zengin, additional, Chamberland, Cindy, additional, Chanel, Caroline P.C., additional, Chapman, Peter, additional, Chatty, Luc, additional, Chaudron, Laurent, additional, Chevrel, Philippe, additional, Chuang, Lewis L., additional, Cinel, Caterina, additional, Claverie, Bernard, additional, Conti, Antonia S., additional, Corson, Yves, additional, Crépeau, Johnathan, additional, Curtin, Adrian, additional, Dehais, Frédéric, additional, Delafontaine, Arnaud, additional, Deliens, Gaétane, additional, Delorme, Arnaud, additional, Di Domenico, Stefano I., additional, Di Flumeri, Gianluca, additional, Diverrez, Jean-Marc, additional, Do, Manh-Cuong, additional, Dong, Mengxi, additional, Duchowski, Andrew T., additional, Dutta, Anirban, additional, Dyer, Lydia, additional, Em, Sonia, additional, Ewing, Kate, additional, Fairclough, Stephen, additional, Falcone, Brian, additional, Falk, Tiago H., additional, Feldman, Sara, additional, Feng, Ying Xing, additional, Finomore, Victor S., additional, Flad, Nina, additional, Formwalt, Alice, additional, Fort, Alexandra, additional, Fourcade, Paul, additional, Fournier, Marc A., additional, Frey, Jérémy, additional, Gabaude, C., additional, Gagey, Olivier, additional, Garbey, Marc, additional, Garcia, Liliana, additional, Gateau, Thibault, additional, Gehrke, Lukas, additional, Getchell, Nancy, additional, Giagloglou, Evanthia, additional, Glatz, Christiane, additional, Goodyear, Kimberly, additional, Gougelet, Robert J., additional, Gouraud, Jonas, additional, Gramann, Klaus, additional, Grewal, Dhruv, additional, Guerrero-Mosquera, Carlos, additional, Guillaume, Céline, additional, Hachet, Martin, additional, Hamaoui, Alain, additional, Hancock, Gabriella M., additional, Hancock, Peter A., additional, Hani, Ahmad Fadzil M., additional, Harwood, Amanda E., additional, Hayashibe, Mitsuhiro, additional, Heiman-Patterson, Terry, additional, Hervé, Girod, additional, Hogervorst, Maarten A.J., additional, Holloway, Amy L., additional, Honeine, Jean-Louis, additional, Hong, Keum-Shik, additional, Ihme, Klas, additional, Izzetoglu, Kurtulus, additional, Izzetoglu, Meltem, additional, Jackson, Philip L., additional, Jallais, Christophe, additional, Janssen, Christian P., additional, Jeremic, Branislav, additional, Jipp, Meike, additional, Jungnickel, Evelyn, additional, Kadogami, Hélio, additional, Kara, Gozde, additional, Karwowski, Waldemar, additional, Kennedy, Quinn, additional, Kessler, Theresa T., additional, Khan, Muhammad J., additional, Khan, Rayyan A., additional, Klug, Marius, additional, Kraft, Amanda E., additional, Krein, Michael, additional, Kreplin, Ute, additional, Kroczek, Bartlomiej, additional, Krol, Lauens R., additional, Krueger, Frank, additional, Labaune, Ombeline, additional, Lafond, Daniel, additional, Lantieri, Claudio, additional, Lanzi, Paola, additional, Laouar, Amine, additional, Lauren, Dargent, additional, Leproult, Rachel, additional, Lespinet-Najib, Véronique, additional, Liang, Ling-Yin, additional, Lotte, Fabien, additional, Macuzic, Ivan, additional, Maille, Nicolas, additional, Maior, Horia A, additional, Malin, S., additional, Marois, Alexandre, additional, Mars, Franck, additional, Martin, Nicolas, additional, Matton, Nadine, additional, Matyjek, Magdalena, additional, McCarthy, Kevin, additional, McKendrick, Ryan, additional, McWilliams, Tom, additional, Mehler, Bruce, additional, Mehta, Ranjana, additional, Mehta, Ranjana K., additional, Menoret, Mathilde, additional, Miyake, Yoshihiro, additional, Moly, Alexandre, additional, Murtza, Rabia, additional, Muthalib, Makii, additional, Muthalib, Mark, additional, Naseer, Noman, additional, Navarro, Jordan, additional, Newport, Roger, additional, Nijholt, Anton, additional, Ociepka, Michal, additional, Olivier, Morellec, additional, Omurtag, Ahmet, additional, Onaral, Banu, additional, Ora, Hiroki, additional, Oudejans, Bob, additional, Öztürk, Özgürol, additional, Paczynski, Martin, additional, Pallamin, Nico, additional, Parasuraman, Raja, additional, Parent, Mark, additional, Patesson, René, additional, Paul, Kou, additional, Peigneux, Philippe, additional, Peissner, Matthias, additional, Pepin, G., additional, Perrey, Stephane, additional, Peysakhovich, Vsevolod, additional, Plank, Markus, additional, Poli, Riccardo, additional, Pollmann, Kathrin, additional, Pozzi, Simone, additional, Puccinelli, Nancy M., additional, Pylouster, Jean, additional, Rızvanoğlu, Kerem, additional, Ragot, Martin, additional, Reimer, Bryan, additional, Reynaud, Emanuelle, additional, Rhee, Joohyun, additional, Rieger, Jochem W., additional, Ries, Anthony J., additional, Roberge-Vallières, Benoit, additional, Rodrigo, Achala H., additional, Roggeveen, Anne L., additional, Ron-Angevin, Ricardo, additional, Roumy, Guillaume, additional, Roy, Raphaëlle N., additional, Ruocco, Anthony C., additional, Russell, Bartlett A., additional, Russo, Jon, additional, Ryan, Richard M., additional, Sargent, Amanda, additional, Satterfield, Kelly, additional, Sawyer, Ben D., additional, Scannella, Sébastien, additional, Scheer, Menja, additional, Scheldrup, Melissa, additional, Schilder, Alex, additional, Sciaraffa, Nicolina, additional, Sciarini, Lee, additional, Senderecka, Magdalena, additional, Sharples, Sarah, additional, Shaw, Tyler H., additional, Shewokis, Patricia A., additional, Simone, Andrea, additional, Slama, Hichem, additional, Smith, Alastair D., additional, Somon, Bertille, additional, Souissi, Hiba, additional, Späth, Moritz, additional, Stowers, Kimberly L., additional, Suied, Clara, additional, Sun, Junfeng, additional, Suri, Rajnesh, additional, Tang, Tong Boon, additional, Tang, Yingying, additional, Tartan, Emre O., additional, Tebbache, Nadège, additional, Techer, Franck, additional, Terzibas, Cengiz, additional, Tessier, Catherine, additional, Teyssedre, Claudine, additional, Thair, Hayley, additional, Thériault, Jean-Denis, additional, Toet, Alexander, additional, Tong, Shanbao, additional, Touryan, Jonathan, additional, Trask, Amy, additional, Tremblay, Sébastien, additional, Unni, Anirudh, additional, Vachon, François, additional, Valeriani, Davide, additional, Valéry, Benoît, additional, van den Berg, Helma, additional, Vignali, Valeria, additional, Vukelić, Mathias, additional, Wang, Jijun, additional, Wilson, Max L., additional, Wusch, Emily, additional, Xanthopoulos, Petros, additional, Yiou, Eric, additional, Zafar, Amad, additional, Zander, Thorsten O., additional, Ziegler, Matthias D., additional, and Živanovic-Macuzic, Ivana, additional

Published
2019
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33. sj-docx-2-nnr-10.1177_15459683231164787 – Supplemental material for Differential Associations of Mobility With Fronto-Striatal Integrity and Lesion Load in Older Adults With and Without Multiple Sclerosis

Author

Wagshul, Mark E., Foley, Frederick W., Chaudhary, Kapil, Lipton, Michael L., Motl, Robert W., Izzetoglu, Meltem, Hernandez, Manuel E., Picone, Mary Ann, and Holtzer, Roee

Subjects
FOS: Clinical medicine, 110308 Geriatrics and Gerontology, 110904 Neurology and Neuromuscular Diseases, Neuroscience
Abstract

Supplemental material, sj-docx-2-nnr-10.1177_15459683231164787 for Differential Associations of Mobility With Fronto-Striatal Integrity and Lesion Load in Older Adults With and Without Multiple Sclerosis by Mark E. Wagshul, Frederick W. Foley, Kapil Chaudhary, Michael L. Lipton, Robert W. Motl, Meltem Izzetoglu, Manuel E. Hernandez, Mary Ann Picone and Roee Holtzer in Neurorehabilitation and Neural Repair

Published
2023
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34. sj-docx-1-nnr-10.1177_15459683231164787 – Supplemental material for Differential Associations of Mobility With Fronto-Striatal Integrity and Lesion Load in Older Adults With and Without Multiple Sclerosis

Author

Wagshul, Mark E., Foley, Frederick W., Chaudhary, Kapil, Lipton, Michael L., Motl, Robert W., Izzetoglu, Meltem, Hernandez, Manuel E., Picone, Mary Ann, and Holtzer, Roee

Subjects
FOS: Clinical medicine, 110308 Geriatrics and Gerontology, 110904 Neurology and Neuromuscular Diseases, Neuroscience
Abstract

Supplemental material, sj-docx-1-nnr-10.1177_15459683231164787 for Differential Associations of Mobility With Fronto-Striatal Integrity and Lesion Load in Older Adults With and Without Multiple Sclerosis by Mark E. Wagshul, Frederick W. Foley, Kapil Chaudhary, Michael L. Lipton, Robert W. Motl, Meltem Izzetoglu, Manuel E. Hernandez, Mary Ann Picone and Roee Holtzer in Neurorehabilitation and Neural Repair

Published
2023
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37. A Functional Near-Infrared Spectroscopy Study of Lexical Decision Task Supports the Dual Route Model and the Phonological Deficit Theory of Dyslexia

Author

Sela, Itamar, Izzetoglu, Meltem, Izzetoglu, Kurtulus, and Onaral, Banu

Abstract

The dual route model (DRM) of reading suggests two routes of reading development: the phonological and the orthographic routes. It was proposed that although the two routes are active in the process of reading; the first is more involved at the initial stages of reading acquisition, whereas the latter needs more reading training to mature. A number of studies have shown that deficient phonological processing is a core deficit in developmental dyslexia. According to the DRM, when the Lexical Decision Task (LDT) is performed, the orthographic route should also be involved when decoding words, whereas it is clear that when decoding pseudowords the phonological route should be activated. Previous functional near-infrared spectroscopy (fNIR) studies have suggested that the upper left frontal lobe is involved in decision making in the LDT. The current study used fNIR to compare left frontal lobe activity during LDT performance among three reading-level groups: 12-year-old children, young adult dyslexic readers, and young adult typical readers. Compared to typical readers, the children demonstrated lower activity under the word condition only, whereas the dyslexic readers showed lower activity under the pseudoword condition only. The results provide evidence for upper left frontal lobe involvement in LDT and support the DRM and the phonological deficit theory of dyslexia.

Published
2014
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38. Functional Near-Infrared Spectroscopy in Addiction Treatment: Preliminary Evidence as a Biomarker of Treatment Response

Author

Bunce, Scott C., Harris, Jonathan, Izzetoglu, Kurtulus, Ayaz, Hasan, Izzetoglu, Meltem, Pourrezaei, Kambiz, Onaral, Banu, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Schmorrow, Dylan D., editor, and Fidopiastis, Cali M., editor

Published
2013
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39. Treatment Status Predicts Differential Prefrontal Cortical Responses to Alcohol and Natural Reinforcer Cues among Alcohol Dependent Individuals

Author

Bunce, Scott C., Izzetoglu, Kurtulus, Izzetoglu, Meltem, Ayaz, Hasan, Pourrezaei, Kambiz, Onaral, Banu, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Zhang, Huaguang, editor, Hussain, Amir, editor, Liu, Derong, editor, and Wang, Zhanshan, editor

Published
2012
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40. Applications of Functional Near Infrared Imaging: Case Study on UAV Ground Controller

Author

Izzetoglu, Kurtulus, Ayaz, Hasan, Menda, Justin, Izzetoglu, Meltem, Merzagora, Anna, Shewokis, Patricia A., Pourrezaei, Kambiz, Onaral, Banu, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Schmorrow, Dylan D., editor, and Fidopiastis, Cali M., editor

Published
2011
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41. Brain Activity of Young and Adult Hebrew Speakers during Lexical Decision Task: fNIR Application to Language

Author

Sela, Itamar, Horowitz–Kraus, Tzipi, Izzetoglu, Meltem, Shewokis, Patricia A., Izzetoglu, Kurtulus, Onaral, Banu, Breznitz, Zvia, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Schmorrow, Dylan D., editor, and Fidopiastis, Cali M., editor

Published
2011
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42. Brain in the Loop: Assessing Learning Using fNIR in Cognitive and Motor Tasks

Author

Shewokis, Patricia A., Ayaz, Hasan, Izzetoglu, Meltem, Bunce, Scott, Gentili, Rodolphe J., Sela, Itamar, Izzetoglu, Kurtulus, Onaral, Banu, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Schmorrow, Dylan D., editor, and Fidopiastis, Cali M., editor

Published
2011
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43. Implementation of fNIRS for Monitoring Levels of Expertise and Mental Workload

Author

Bunce, Scott C., Izzetoglu, Kurtulus, Ayaz, Hasan, Shewokis, Patricia, Izzetoglu, Meltem, Pourrezaei, Kambiz, Onaral, Banu, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Schmorrow, Dylan D., editor, and Fidopiastis, Cali M., editor

Published
2011
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45. Functional Near-Infrared Spectroscopy and Electroencephalography: A Multimodal Imaging Approach

Author

Merzagora, Anna C., Izzetoglu, Meltem, Polikar, Robi, Weisser, Valerie, Onaral, Banu, Schultheis, Maria T., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Schmorrow, Dylan D., editor, Estabrooke, Ivy V., editor, and Grootjen, Marc, editor

Published
2009
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46. Altered prefrontal activation during the inhibition of eating responses in women with bulimia nervosa.

Author

Berner, Laura A., Winter, Samantha R., Ayaz, Hasan, Shewokis, Patricia A., Izzetoglu, Meltem, Marsh, Rachel, Nasser, Jennifer A., Matteucci, Alyssa J., and Lowe, Michael R.

Subjects
FOOD habits, PREFRONTAL cortex, NEAR infrared spectroscopy, TASK performance, BULIMIA, RESEARCH funding, CONTROL (Psychology)
Abstract

Background: The sense of 'loss of control' (LOC), or a feeling of being unable to stop eating or control what or how much one is eating, is the most salient aspect of binge eating. However, the neural alterations that may contribute to this experience and eating behavior remain poorly understood. Methods: We used functional near-infrared spectroscopy (fNIRS) to measure activation in the prefrontal cortices of 23 women with bulimia nervosa (BN) and 23 healthy controls (HC) during two tasks: a novel go/no-go task requiring inhibition of eating responses, and a standard go/no-go task requiring inhibition of button-pressing responses. Results: Women with BN made more commission errors on both tasks. BN subgroups with the most severe LOC eating (n = 12) and those who felt most strongly that they binge ate during the task (n = 12) showed abnormally reduced bilateral ventromedial prefrontal cortex (vmPFC) and right ventrolateral prefrontal cortex (vlPFC) activation associated with eating-response inhibition. In the entire BN sample, lower eating-task activation in right vlPFC was related to more frequent and severe LOC eating, but no group differences in activation were detected on either task when this full sample was compared with HC. BN severity was unrelated to standard-task activation. Conclusions: Results provide initial evidence that diminished PFC activation may directly contribute to more severe eating-specific control deficits in BN. Our findings support vmPFC and vlPFC dysfunction as promising treatment targets, and indicate that eating-specific tasks and fNIRS may be useful tools for identifying neural mechanisms underlying dysregulated eating. [ABSTRACT FROM AUTHOR]

Published
2023
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