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Gutiérrez-Farfán I, Reyes-Legorreta C, Solís-Olguín M, Alatorre-Miguel E, Verduzco-Mendoza A, Durand-Rivera A. Evaluation of vinpocetine as a therapy in patients with sensorineural hearing loss: A phase II, open-label, single-center study. J Pharmacol Sci 2021; 145:313-318. [PMID: 33712282 DOI: 10.1016/j.jphs.2021.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 01/07/2021] [Accepted: 01/27/2021] [Indexed: 10/22/2022] Open
Abstract
The progressive degeneration of the excitable cells of the ear depends on the sustained excitation of the voltage-sensitive sodium channels, so the negative pharmacological modulation could be a rational therapeutic strategy against the damage of these cells. The objective was to demonstrate the effectiveness of Vinpocetine (VPC), a potent sodium channel blocker, as a treatment for acquired sensorineural hearing loss. A phase II, longitudinal and prospective open clinical study, was conducted over a period of 12 months with patients older than 18 years, to demonstrate the effectiveness of Vinpocetine (VPC) as a treatment for acquired sensorineural hearing loss, using evoked potentials, otoacoustic emissions, audiometry and logoaudiometry, analyzing the results at 6 and 12 months of treatment with Vinpocetine (30 mg/day in 3 doses). It was observed that from 0 to 6 months there was hearing impairment (which was already expected due to the age of the patients). From 6 to 12 months and from 0 to 12 months there were significant differences with a tendency towards improvement, indicating that the aforementioned deterioration not only stopped, but that with the use of vinpocetine, the hearing capacity improved. It is concluded that Vinpocetine helps to stop hearing impairment and even improve hearing.
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Affiliation(s)
| | - Celia Reyes-Legorreta
- División de Neurociencias, Laboratorio de Neuroprotección, Instituto Nacional de Rehabilitación LGII (INR-SSA) CDMX, Mexico
| | - Mauricio Solís-Olguín
- División de Neurociencias, Laboratorio de Neuroprotección, Instituto Nacional de Rehabilitación LGII (INR-SSA) CDMX, Mexico
| | - Efrén Alatorre-Miguel
- División de Neurociencias, Laboratorio de Neuroprotección, Instituto Nacional de Rehabilitación LGII (INR-SSA) CDMX, Mexico
| | - Antonio Verduzco-Mendoza
- Subdirección de Investigación Biotecnológica. Instituto Nacional de Rehabilitación LGII (INR-SSA) CDMX, Mexico
| | - Alfredo Durand-Rivera
- División de Neurociencias, Laboratorio de Neuroprotección, Instituto Nacional de Rehabilitación LGII (INR-SSA) CDMX, Mexico.
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Westerhausen R, Samuelsen F. An optimal dichotic-listening paradigm for the assessment of hemispheric dominance for speech processing. PLoS One 2020; 15:e0234665. [PMID: 32544204 PMCID: PMC7297371 DOI: 10.1371/journal.pone.0234665] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/30/2020] [Indexed: 11/25/2022] Open
Abstract
Dichotic-listening paradigms are widely accepted as non-invasive tests of hemispheric dominance for language processing and represent a standard diagnostic tool for the assessment of developmental auditory and language disorders. Despite its popularity in research and clinical settings, dichotic paradigms show comparatively low reliability, significantly threatening the validity of conclusions drawn from the results. Thus, the aim of the present work was to design and evaluate a novel, highly reliable dichotic-listening paradigm for the assessment of hemispheric differences. Based on an extensive literature review, the paradigm was optimized to account for the main experimental variables which are known to systematically bias task performance or affect random error variance. The main design principle was to minimize the relevance of higher cognitive functions on task performance in order to obtain stimulus-driven laterality estimates. To this end, the key design features of the paradigm were the use of stop-consonant vowel (CV) syllables as stimulus material, a single stimulus pair per trial presentation mode, and a free recall (single) response instruction. Evaluating a verbal and manual response-format version of the paradigm in a sample of N = 50 healthy participants, we yielded test-retest intra-class correlations of rICC = .91 and .93 for the two response format versions. These excellent reliability estimates suggest that the optimal paradigm may offer an effective and efficient alternative to currently used paradigms both in research and diagnostic.
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Affiliation(s)
- René Westerhausen
- Department of Psychology, University of Oslo, Oslo, Norway
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway
| | - Fredrik Samuelsen
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway
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Desjardins JL, Bangert A, Gomez N. What Does Language Have to Do With It? The Impact of Age and Bilingual Experience on Inhibitory Control in an Auditory Dichotic Listening Task. JOURNAL OF SPEECH, LANGUAGE, AND HEARING RESEARCH : JSLHR 2020; 63:1581-1594. [PMID: 32379567 PMCID: PMC7842127 DOI: 10.1044/2020_jslhr-19-00238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/19/2019] [Accepted: 01/21/2020] [Indexed: 06/11/2023]
Abstract
Purpose The purpose of the current study was to examine inhibition of irrelevant information in younger and older English monolingual and Spanish-English bilingual adults. Method Sixty-one participants divided into four groups: 15 younger English monolinguals, 16 younger Spanish-English bilinguals, 15 older English monolinguals, and 15 older Spanish-English bilinguals participated in this study. Younger participants were 18-25 years of age, and older participants were 47-62 years of age. Bilingual participants had learned Spanish from birth and began learning English by the age of 3 years old (SD = 3.1). All participants had hearing thresholds of < 25 dB HL from 250 to 4000 Hz, bilaterally (American National Standards Institute [ANSI], 2004) and were right-handed. Inhibition was measured using a forced-attention dichotic consonant vowel listening task with a prime stimulus and the Simon task, a nonverbal visual test. Results Younger participants were better able to inhibit the irrelevant auditory and visual stimuli and modulate their attention according to the instructions that they were given compared to the older participants. However, no significant differences in inhibition performance or attention modulation were evidenced between the monolingual and bilingual groups in any of the dichotic listening conditions or on the Simon task. Conclusions No significant differences in performance on an auditory or a visual test of inhibition of irrelevant information was evidenced between the monolingual and bilingual participants in this study. These findings suggest that younger and older adult, early balanced Spanish-English bilinguals may not exhibit an advantage in the inhibition of irrelevant information compared to younger and older adult English monolinguals.
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Affiliation(s)
| | - Ashley Bangert
- Department of Psychology, The University of Texas at El Paso
| | - Ninive Gomez
- Department of Rehabilitation Sciences, The University of Texas at El Paso
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Eskicioglu E, Taslica S, Narin B, Guducu C, Oniz A, Ozgoren M. Brain asymmetry in directing attention during dichotic listening test: An fNIRS study. Laterality 2019; 24:377-392. [DOI: 10.1080/1357650x.2018.1527847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Emre Eskicioglu
- Department of Biophysics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Serhat Taslica
- Department of Biophysics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Baris Narin
- Department of Biophysics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Cagdas Guducu
- Department of Biophysics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Adile Oniz
- Department of Biophysics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Murat Ozgoren
- Department of Biophysics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
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Voyer D, Hearn N. Auditory semantic priming and the dichotic right ear advantage. Brain Cogn 2019; 135:103575. [PMID: 31195237 DOI: 10.1016/j.bandc.2019.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/28/2019] [Accepted: 05/28/2019] [Indexed: 11/28/2022]
Abstract
The current study presents two experiments that aimed to explore the effects of auditory semantic priming on the dichotic right ear advantage. In Experiment 1, a classic fused dichotic words task was modified with the addition of auditory associative primes with three levels of relatedness (right, left, or neither ear). In Experiment 2, a new dichotic listening task was developed based on a binaural task used in a published auditory priming study. In both experiments, we expected that priming would produce a large right ear advantage when related to the right ear target but that the magnitude of this advantage would decrease for left ear related targets. Although evidence of priming (faster responses for related than unrelated primes) was found in both experiments, only Experiment 2 confirmed our prediction of an ear by prime relatedness interaction. Results are interpreted in the context of models concerned with the role of each cerebral hemisphere in semantic processing as well as models of perceptual asymmetries.
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Affiliation(s)
- Daniel Voyer
- Department of Psychology, University of New Brunswick, Canada.
| | - Natalie Hearn
- Department of Psychology, University of New Brunswick, Canada
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Westerhausen R. A primer on dichotic listening as a paradigm for the assessment of hemispheric asymmetry. Laterality 2019; 24:740-771. [DOI: 10.1080/1357650x.2019.1598426] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- René Westerhausen
- Center for Lifespan Changes in Brain and Cognition (LCBC), Department of Psychology, University of Oslo, Oslo, Norway
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway
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7
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Westerhausen R, Kompus K. How to get a left-ear advantage: A technical review of assessing brain asymmetry with dichotic listening. Scand J Psychol 2018; 59:66-73. [DOI: 10.1111/sjop.12408] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 09/25/2017] [Indexed: 12/25/2022]
Affiliation(s)
- René Westerhausen
- Center for Lifespan Changes in Brain and Cognition (LCBC); Department of Psychology; University of Oslo; Oslo Norway
- Department of Biological and Medical Psychology; University of Bergen; Bergen Norway
| | - Kristiina Kompus
- Department of Biological and Medical Psychology; University of Bergen; Bergen Norway
- School of Natural Sciences and Health; University of Tallinn; Estonia
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9
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Shuai L, Gong T. Temporal relation between top-down and bottom-up processing in lexical tone perception. Front Behav Neurosci 2014; 8:97. [PMID: 24723863 PMCID: PMC3971173 DOI: 10.3389/fnbeh.2014.00097] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Accepted: 03/09/2014] [Indexed: 12/03/2022] Open
Abstract
Speech perception entails both top-down processing that relies primarily on language experience and bottom-up processing that depends mainly on instant auditory input. Previous models of speech perception often claim that bottom-up processing occurs in an early time window, whereas top-down processing takes place in a late time window after stimulus onset. In this paper, we evaluated the temporal relation of both types of processing in lexical tone perception. We conducted a series of event-related potential (ERP) experiments that recruited Mandarin participants and adopted three experimental paradigms, namely dichotic listening, lexical decision with phonological priming, and semantic violation. By systematically analyzing the lateralization patterns of the early and late ERP components that are observed in these experiments, we discovered that: auditory processing of pitch variations in tones, as a bottom-up effect, elicited greater right hemisphere activation; in contrast, linguistic processing of lexical tones, as a top-down effect, elicited greater left hemisphere activation. We also found that both types of processing co-occurred in both the early (around 200 ms) and late (around 300–500 ms) time windows, which supported a parallel model of lexical tone perception. Unlike the previous view that language processing is special and performed by dedicated neural circuitry, our study have elucidated that language processing can be decomposed into general cognitive functions (e.g., sensory and memory) and share neural resources with these functions.
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Affiliation(s)
- Lan Shuai
- Department of Electrical and Computer Engineering, Johns Hopkins University Baltimore, MD, USA
| | - Tao Gong
- Department of Linguistics, University of Hong Kong Hong Kong, China
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Amaral AA, Langers DRM. The relevance of task-irrelevant sounds: hemispheric lateralization and interactions with task-relevant streams. Front Neurosci 2013; 7:264. [PMID: 24409115 PMCID: PMC3873511 DOI: 10.3389/fnins.2013.00264] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 12/16/2013] [Indexed: 11/13/2022] Open
Abstract
The effect of unattended task-irrelevant auditory stimuli in the context of an auditory task is not well understood. Using human functional magnetic resonance imaging (fMRI) we compared blood oxygenation level dependent (BOLD) signal changes resulting from monotic task-irrelevant stimulation, monotic task-relevant stimulation and dichotic stimulation with an attended task-relevant stream to one ear and an unattended task-irrelevant stream to the other ear simultaneously. We found strong bilateral BOLD signal changes in the auditory cortex (AC) resulting from monotic stimulation in a passive listening condition. Consistent with previous work, these responses were largest on the side contralateral to stimulation. AC responses to the unattended (task-irrelevant) sounds were preferentially contralateral and strongest for the most difficult condition. Stronger bilateral AC responses occurred during monotic passive-listening than to an unattended stream presented in a dichotic condition, with attention focused on one ear. Additionally, the visual cortex showed negative responses compared to the baseline in all stimulus conditions including passive listening. Our results suggest that during dichotic listening, with attention focused on one ear, (1) the contralateral and the ipsilateral auditory pathways are suppressively interacting; and (2) cross-modal inhibition occurs during purely acoustic stimulation. These findings support the existence of response suppressions within and between modalities in the presence of competing interfering stimuli.
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Affiliation(s)
- Ana A Amaral
- International Neuroscience Doctoral Programme, Champalimaud Neuroscience Programme, Champalimaud Centre for the Unknown Lisbon, Portugal ; Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen Groningen, Netherlands
| | - Dave R M Langers
- Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen Groningen, Netherlands ; National Institute for Health Research, Nottingham Hearing Biomedical Research Unit, School of Medicine, University of Nottingham Nottingham, UK
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Specht K. Neuronal basis of speech comprehension. Hear Res 2013; 307:121-35. [PMID: 24113115 DOI: 10.1016/j.heares.2013.09.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 09/15/2013] [Accepted: 09/19/2013] [Indexed: 01/18/2023]
Abstract
Verbal communication does not rely only on the simple perception of auditory signals. It is rather a parallel and integrative processing of linguistic and non-linguistic information, involving temporal and frontal areas in particular. This review describes the inherent complexity of auditory speech comprehension from a functional-neuroanatomical perspective. The review is divided into two parts. In the first part, structural and functional asymmetry of language relevant structures will be discus. The second part of the review will discuss recent neuroimaging studies, which coherently demonstrate that speech comprehension processes rely on a hierarchical network involving the temporal, parietal, and frontal lobes. Further, the results support the dual-stream model for speech comprehension, with a dorsal stream for auditory-motor integration, and a ventral stream for extracting meaning but also the processing of sentences and narratives. Specific patterns of functional asymmetry between the left and right hemisphere can also be demonstrated. The review article concludes with a discussion on interactions between the dorsal and ventral streams, particularly the involvement of motor related areas in speech perception processes, and outlines some remaining unresolved issues. This article is part of a Special Issue entitled Human Auditory Neuroimaging.
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Affiliation(s)
- Karsten Specht
- Department of Biological and Medical Psychology, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway; Department for Medical Engineering, Haukeland University Hospital, Bergen, Norway.
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12
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Sætrevik B, Huster RJ, Herrmann CS. Proactive and reactive sequential effects on selective attention. Brain Cogn 2013; 83:27-33. [DOI: 10.1016/j.bandc.2013.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 05/11/2013] [Accepted: 06/14/2013] [Indexed: 11/30/2022]
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SAETREVIK BJØRN. Facilitating and inhibiting effects of priming and selection criteria in a sequence of dichotic listening trials. Scand J Psychol 2012; 53:309-15. [DOI: 10.1111/j.1467-9450.2012.00958.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sætrevik B, Specht K. Cognitive conflict in a syllable identification task causes transient activation of speech perception area. Brain Cogn 2012; 78:200-5. [DOI: 10.1016/j.bandc.2011.12.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 11/29/2011] [Accepted: 12/08/2011] [Indexed: 10/14/2022]
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Ocklenburg S, Güntürkün O, Beste C. Hemispheric asymmetries and cognitive flexibility: an ERP and sLORETA study. Brain Cogn 2011; 78:148-55. [PMID: 22133628 DOI: 10.1016/j.bandc.2011.11.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 10/28/2011] [Accepted: 11/06/2011] [Indexed: 10/14/2022]
Abstract
Although functional cerebral asymmetries (FCAs) affect all cognitive domains, their modulation of the efficacy of specific executive functions is largely unexplored. In the present study, we used a lateralized version of the task switching paradigm to investigate the relevance of hemispheric asymmetries for cognitive control processes. Words were tachistoscopically presented in the left (LVF) and right visual half field (RVF). Participants had to categorise the words either based on their initial letters, or according to their word type. On half of the trials the task changed (switch trials) whereas on the other half it stayed the same (repeat trials). ERPs were recorded and the neural sources of the ERPs were reconstructed using standardised low resolution brain electromagnetic tomography (sLORETA). In the word type task, participants were faster on repeat trials when stimuli were presented in the RVF. In contrast, in the initial letter task participants were faster on repeat trials and in general more accurate after stimulus presentation in the LVF. In both tasks, no hemispheric asymmetries in reaction times were observed on switch trials. On the electrophysiological level, we observed a left lateralization of the N1 that was mediated by activation in the left extrastriate cortex as well as a greater positivity of the P3b after stimulus presentation in the RVF compared to the LVF that was mediated by activation in the superior parietal cortex. These results show that FCAs affect the neurophysiological correlates of executive functions related to task switching. The relation of neurophysiological and behavioural asymmetries is mediated by task complexity, with more complex tasks leading to more interhemispheric interaction and smaller left-right differences in behavioural measures. These findings reveal that FCAs are an important modulator of executive functions related to cognitive flexibility.
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Affiliation(s)
- Sebastian Ocklenburg
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University of Bochum, Germany.
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16
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Hiscock M, Kinsbourne M. Attention and the right-ear advantage: What is the connection? Brain Cogn 2011; 76:263-75. [DOI: 10.1016/j.bandc.2011.03.016] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Revised: 03/22/2011] [Accepted: 03/22/2011] [Indexed: 11/30/2022]
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Becker KT, Costa MJ, Lautenschlager L, Schuster LC, Hennig TR, Tochetto TM. O Efeito da lateralidade em teste de fala no ruído em normo-ouvintes. REVISTA CEFAC 2011. [DOI: 10.1590/s1516-18462011005000044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJETIVO: verificar o efeito da lateralidade em teste monoaural, na presença de ruído competitivo, que utiliza sentenças como estímulo em indivíduos normo-ouvintes. MÉTODO: 81 indivíduos normo-ouvintes, com idades entre 18 e 44 anos, divididos em 2 grupos de acordo com a lateralidade - 45 indivíduos destros e 36 canhotos -, foram avaliados por meio do teste Listas de Sentenças em Português (LSP), e obtida a relação sinal-ruído (S/R) para cada orelha. RESULTADOS: os valores médios obtidos para as relações S/R na orelha direita, para os indivíduos destros e canhotos, foram, respectivamente, -6,5 dB e -4,5 dB. Para a orelha esquerda, foram -7,0 dB e -7,5 dB. As orelhas direitas apresentaram resultados significantemente piores, tanto nos indivíduos destros, como nos canhotos. No entanto a orelha direita dos canhotos foi sensivelmente pior em comparação a dos destros. CONCLUSÃO: existe diferença quanto ao reconhecimento de fala, na presença de ruído competitivo, em indivíduos destros e canhotos. A orelha direita apresentou pior desempenho em ambos os grupos, sendo que esse resultado negativo é mais acentuado nos canhotos.
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Abstract
The classic McGurk study showed that presentation of one syllable in the visual modality simultaneous with a different syllable in the auditory modality creates the perception of a third, not presented syllable. The current study presented dichotic syllable pairs (one in each ear) simultaneously with video clips of a mouth pronouncing the syllables from one of the ears, or pronouncing a syllable that was not part of the dichotic pair. When asked to report the auditory stimuli, responses were shifted towards selecting the auditory stimulus from the side that matched the visual stimulus.
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Affiliation(s)
- Bjørn Saetrevik
- Department of Biological and Medical Psychology, Faculty of Psychology, University of Bergen, Bergen, Norway.
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A biased competition model accounts for negative priming in a free choice situation as residual effects of inhibitory conflict resolution. Neurosci Lett 2010; 468:141-5. [DOI: 10.1016/j.neulet.2009.10.085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Revised: 10/13/2009] [Accepted: 10/26/2009] [Indexed: 11/21/2022]
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Sætrevik B, Specht K. Cognitive conflict and inhibition in primed dichotic listening. Brain Cogn 2009; 71:20-5. [DOI: 10.1016/j.bandc.2009.03.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2008] [Revised: 03/03/2009] [Accepted: 03/20/2009] [Indexed: 11/27/2022]
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Ozgoren M, Erdogan U, Bayazit O, Taslica S, Oniz A. Brain asymmetry measurement using EMISU (embedded interactive stimulation unit) in applied brain biophysics. Comput Biol Med 2009; 39:879-88. [PMID: 19665111 DOI: 10.1016/j.compbiomed.2009.07.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2008] [Revised: 07/01/2009] [Accepted: 07/01/2009] [Indexed: 11/30/2022]
Abstract
The basic motive to study the brain asymmetry using a dichotic paradigm, forced the authors to develop an interactive stimulus system, where not only the stimuli but also the responses could be interactively registered real time on to the EEG data. Therefore, an embedded interactive stimulation unit (EMISU) was constructed and applied in such a task, incorporating behavioral and evoked data from 20 volunteers (10 male, 10 female, 21.15 years). The results provided a significant factor of laterality in favor of right ear responses (p<0.001) and also proved the applicability of the proposed design.
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Affiliation(s)
- Murat Ozgoren
- Department of Biophysics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey.
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22
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Gadea M, Espert R. A comparison of the effects for sustained versus shifted attention on dichotic listening performance. Laterality 2009; 14:315-28. [PMID: 19125364 DOI: 10.1080/13576500802440707] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We measured the effect of two types of directed attention instructions, sustained by a verbal cue or shifted by a tone cue with different time intervals (150, 450, and 750 ms), on a consonant-vowel dichotic listening (C-V DL) test for a large group of right- and left-handed participants of both sexes. An increasing of the hits and a decreasing of the intrusions from the baseline DL test scores was evident for both types of attentional manipulations, with no differences regarding sex or handedness. Increasing the time from 150 to 450 ms benefited the focusing of attention but this advantage was markedly attenuated at the longer 750-ms interval. The improving effect was seen for the hits of both the left and right ears and so a right ear advantage was evident for the three time intervals.
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Affiliation(s)
- Marien Gadea
- Departamento de Psicobiología, Facultad de Psicología, Universitat de València, Avda. Blasco Ibañez 21, València, Spain.
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Bayazıt O, Öniz A, Hahn C, Güntürkün O, Özgören M. Dichotic listening revisited: Trial-by-trial ERP analyses reveal intra- and interhemispheric differences. Neuropsychologia 2009; 47:536-45. [DOI: 10.1016/j.neuropsychologia.2008.10.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2008] [Revised: 09/22/2008] [Accepted: 10/03/2008] [Indexed: 10/21/2022]
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