Selective tuning of the left and right auditory cortices during spatially directed attention

Alho, Kimmo; Медведев, С. В.; Pakhomov, S. V.; Roudas, Marina; Tervaniemi, Mari; Reinikainen, K.; Zeffiro, Thomas A.; Näätänen, Risto

doi:10.1016/s0926-6410(98)00036-6

Cited by 131 publications

(102 citation statements)

References 36 publications

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“…Although effects of selective attention in nonprimary auditory areas have been observed in several previous experiments using positron emission tomography (PET) (Alho et al, 1999), functional MRI (Pugh et al, 1996;Jancke et al, 1999), MEG (Woldorff et al, 1993;Ahveninen et al, 2006), or cortical EEG (Neelon et al, 2006), only few neuroimaging studies have reported attention effects in the primary auditory cortex (Fujiwara et al, 1998;Alho et al, 1999;Jancke et al, 1999). The present results confirm that selective auditory attention can alter the sensory responses in both the primary and associative auditory areas.…”

Section: Localization Of Auditory Selective-attention Effectssupporting

confidence: 82%

Effects of Selective Attention on the Electrophysiological Representation of Concurrent Sounds in the Human Auditory Cortex

Bidet-Caulet

Fischer²,

Besle³

et al. 2007

J. Neurosci.

203

173

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In noisy environments, we use auditory selective attention to actively ignore distracting sounds and select relevant information, as during a cocktail party to follow one particular conversation. The present electrophysiological study aims at deciphering the spatiotemporal organization of the effect of selective attention on the representation of concurrent sounds in the human auditory cortex. Sound onset asynchrony was manipulated to induce the segregation of two concurrent auditory streams. Each stream consisted of amplitude modulated tones at different carrier and modulation frequencies. Electrophysiological recordings were performed in epileptic patients with pharmacologically resistant partial epilepsy, implanted with depth electrodes in the temporal cortex. Patients were presented with the stimuli while they either performed an auditory distracting task or actively selected one of the two concurrent streams. Selective attention was found to affect steady-state responses in the primary auditory cortex, and transient and sustained evoked responses in secondary auditory areas. The results provide new insights on the neural mechanisms of auditory selective attention: stream selection during sound rivalry would be facilitated not only by enhancing the neural representation of relevant sounds, but also by reducing the representation of irrelevant information in the auditory cortex. Finally, they suggest a specialization of the left hemisphere in the attentional selection of fine-grained acoustic information.

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Section: Localization Of Auditory Selective-attention Effectssupporting

confidence: 82%

Effects of Selective Attention on the Electrophysiological Representation of Concurrent Sounds in the Human Auditory Cortex

Bidet-Caulet

Fischer²,

Besle³

et al. 2007

J. Neurosci.

203

173

View full text Add to dashboard Cite

show abstract

“…Although these findings are consistent with the proposal that object formation may occur outside the focus of attention, a possible effect of attention cannot be ruled out. Evidence from scalp recordings of cortical evoked brain activity and functional neuroimaging studies has shown that selective attention not only modulates the processing of task-relevant stimuli but also modifies neural activity elicited by task-irrelevant sounds (30)(31)(32)(33). Such findings are consistent with a dual-process of attention in which the processing of task-relevant stimuli may be facilitated while the processing of task-irrelevant stimuli may be suppressed during selective listening (34).…”

Section: Grouping Of Task-irrelevant Materialsmentioning

confidence: 81%

Selectively attending to auditory objects

Alain¹

2000

Front Biosci

138

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“…Reports of a more positive P2/P190, along with the more positive P20-50 and more negative N1, also suggest that attention generally enhances responses in sensory cortex beyond the contributions of putative endogenous components (Woldorff & Hillyard, 1991). This association of greater attentional load or cognitive effort with greater activation in sensory cortex has found growing support in both EEG (Alcaini et al, 1995;Sussman et al, 2003) and neuroimaging studies (O'Leary et al, 1997;Alho et al, 1999;Jäncke et al, 1999;Zatorre et al, 1999;Petkov et al, 2004;Shomstein & Yantis, 2004). This model has been questioned by other researchers, however, who have countered that fast stimulus rates do not increase the exogenous N1 peak directly but rather the onset of an attention-related negativity (i.e., PN); in such cases, the early PN onset overlaps with the N1 to create an apparent N1 effect (Parasuraman, 1980;Naatanen et al, 1981;Teder et al, 1993).…”

Section: Introductionmentioning

confidence: 94%

The effects of attentional load on auditory ERPs recorded from human cortex

2006

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Responses to acoustic input were recorded from human temporal cortex using subdural electrodes in order to investigate in greater anatomical detail how attentional load modulates exogenous auditory responses. Four patient-volunteers performed a dichotic listening task in which they listened for rare frequency deviants in a series of tones presented to both ears at interstimulus intervals (ISIs) of 400, 800 and 2000 msec. Across all ISIs, stimuli presented contralateral to electrode location produced the strongest deflections in the averaged ERP at approximately 90 and 170 msec post-stimulus on average (labeled N90stg and P170stg). Maximal recording sites for these peaks most often occurred over the Sylvian fissure or the upper bank of the posterior superior temporal gyrus. Neither ISI nor selective attention exhibited substantial effects on peak latencies. However, as presentation rates increased (decreasing ISI), overall averaged event-related potential (ERP) amplitudes declined significantly, while attending to the contralateral stimulus significantly increased both the N90stg and P170stg peaks for most patients. This effect of attention increased with decreasing ISI for both components most clearly in the difference between the grand-average ERPs for attending to vs. ignoring the contralateral stimulus, and even more dramatically in the percentage ratio of that difference over the mean peak amplitude. This amplifying effect of attention with increasing load, along with its anatomical location, suggests that attention can enhance exogenous sources in auditory cortex.

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Selective tuning of the left and right auditory cortices during spatially directed attention

Cited by 131 publications

References 36 publications

Effects of Selective Attention on the Electrophysiological Representation of Concurrent Sounds in the Human Auditory Cortex

Effects of Selective Attention on the Electrophysiological Representation of Concurrent Sounds in the Human Auditory Cortex

Selectively attending to auditory objects

The effects of attentional load on auditory ERPs recorded from human cortex

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