Normal aging selectively diminishes alpha lateralization in visual spatial attention

Hong, Xiangfei; Sun, Junfeng; Bengson, Jesse J.; Mangun, George R.; Tong, Shanbao

doi:10.1016/j.neuroimage.2014.11.019

Cited by 75 publications

(93 citation statements)

References 65 publications

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Section: Discussionmentioning

confidence: 99%

“…For example, younger adults show increased pre-stimulus alpha in anticipation of the need to suppress irrelevant information, whereas older adults do not3942. This is despite older adults showing normal behavioural performance42 and normal ERP-based indices of attentional orienting39. Moreover, older adults have smaller alpha modulation in response to predictive cues regarding the timing of upcoming stimulus events41 alongside smaller behavioural benefits of temporal cues than younger adults4163.…”

Section: Discussionmentioning

confidence: 99%

“…Individual alpha frequency slows with increasing age37, and resting-state alpha oscillations are less likely to spontaneously entrain in older than in younger adults38. Older adults show aberrant alpha lateralization during spatial attention tasks39, in particular for high memory loads40, and show less alpha modulation than younger adults in response to predictive cues4142. However, in the context of effortful listening to speech, alpha amplitude is modulated more by acoustic degradation for older compared to younger listeners43 and for individuals with moderate hearing loss compared to normal-hearing listeners44.…”

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confidence: 99%

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Aging affects the balance of neural entrainment and top-down neural modulation in the listening brain

et al. 2017

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Healthy aging is accompanied by listening difficulties, including decreased speech comprehension, that stem from an ill-understood combination of sensory and cognitive changes. Here, we use electroencephalography to demonstrate that auditory neural oscillations of older adults entrain less firmly and less flexibly to speech-paced (∼3 Hz) rhythms than younger adults’ during attentive listening. These neural entrainment effects are distinct in magnitude and origin from the neural response to sound per se. Non-entrained parieto-occipital alpha (8–12 Hz) oscillations are enhanced in young adults, but suppressed in older participants, during attentive listening. Entrained neural phase and task-induced alpha amplitude exert opposite, complementary effects on listening performance: higher alpha amplitude is associated with reduced entrainment-driven behavioural performance modulation. Thus, alpha amplitude as a task-driven, neuro-modulatory signal can counteract the behavioural corollaries of neural entrainment. Balancing these two neural strategies may present new paths for intervention in age-related listening difficulties.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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Aging affects the balance of neural entrainment and top-down neural modulation in the listening brain

et al. 2017

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“…Electrophysiological studies based on surface EEG or magnetoencephalography have demonstrated alpha band desynchronization contralateral to the focus of attention in bilateral posterior sensors at 300–600 ms following cue onset as well as increases in alpha power contralateral to the ignored stimuli (Rihs et al, 2009). This alpha band desynchronization is considered a marker of allocation of spatial attention (Wyart and Tallon-Baudry, 2008; Capotosto et al, 2009; Hong et al, 2015). Alpha desynchronization occurs principally at occipital sensors outside the cortical surface covered in the current study and also relatively late with respect to the timing of the delay phase of the current study.…”

Section: Discussionmentioning

confidence: 99%

Electrocorticography of Spatial Shifting and Attentional Selection in Human Superior Parietal Cortex

Schrooten

Ghumare

Seynaeve

et al. 2017

Front. Hum. Neurosci.

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Spatial-attentional reorienting and selection between competing stimuli are two distinct attentional processes of clinical and fundamental relevance. In the past, reorienting has been mainly associated with inferior parietal cortex. In a patient with a subdural grid covering the upper and lower bank of the left anterior and middle intraparietal sulcus (IPS) and the superior parietal lobule (SPL), we examined the involvement of superior parietal cortex using a hybrid spatial cueing paradigm identical to that previously applied in stroke and in healthy controls. In SPL, as early as 164 ms following target onset, an invalidly compared to a validly cued target elicited a positive event-related potential (ERP) and an increase in intertrial coherence (ITC) in the theta band, regardless of the direction of attention. From around 400–650 ms, functional connectivity [weighted phase lag index (wPLI) analysis] between SPL and IPS briefly inverted such that SPL activity was driving IPS activity. In contrast, the presence of a competing distracter elicited a robust change mainly in IPS from 300 to 600 ms. Within superior parietal cortex reorienting of attention is associated with a distinct and early electrophysiological response in SPL while attentional selection is indexed by a relatively late electrophysiological response in the IPS. The long latency suggests a role of IPS in working memory or cognitive control rather than early selection.

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“…Recent studies indicate that the level of alpha power lateralization during the cue-target interval is significantly reduced in older adults (Vaden et al, 2012; Hong et al, 2015; Li and Zhao, 2015), and this reduction is most prominent along parietal-occipital regions (Zanto et al, 2011; Deiber et al, 2013). Specifically, older adults showed significant reductions in the level of event-related synchronization of prestimulus alpha (ipsilaterally) along these sites (Karrasch et al, 2004; Deiber et al, 2010; Vaden et al, 2012), which is consistent with earlier reports suggesting that older adults face significant difficulty with distractor suppression (Gazzaley et al, 2008; Schmitz et al, 2010; Haring et al, 2013).…”

Section: Impact Of Dorsal Visual Stream Declines (Eeg)mentioning

confidence: 99%

Attentional Orienting and Dorsal Visual Stream Decline: Review of Behavioral and EEG Studies

Sciberras-Lim

Lambert

2017

Front. Aging Neurosci.

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Every day we are faced with an overwhelming influx of visual information. Visual attention acts as the filtering mechanism that enables us to focus our limited neural resources, by selectively processing only the most relevant and/or salient aspects of our visual environment. The ability to shift attention to the most behaviorally relevant items enables us to successfully navigate and interact with our surroundings. The dorsal visual stream is important for the rapid and efficient visuospatial orienting of attention. Unfortunately, recent evidence suggests that the dorsal visual stream may be especially vulnerable to age-related decline, with significant deterioration becoming evident quite early in the aging process. Yet, despite the significant age-related declines to the dorsal visual stream, the visuospatial orienting of attention appears relatively well preserved in older adults, at least in the early stages of aging. The maintenance of visuospatial orienting of attention in older adults appears to be facilitated by the engagement of compensatory neural mechanisms. In particular, older adults demonstrate heightened activity in the frontal regions to compensate for the reduced activity in the posterior sensory regions. These findings suggest that older adults are more reliant on control processes mediated by the anterior regions of the frontoparietal attention network to compensate for less efficient sensory processing within the posterior sensory cortices.

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Normal aging selectively diminishes alpha lateralization in visual spatial attention

Cited by 75 publications

References 65 publications

Aging affects the balance of neural entrainment and top-down neural modulation in the listening brain

Aging affects the balance of neural entrainment and top-down neural modulation in the listening brain

Electrocorticography of Spatial Shifting and Attentional Selection in Human Superior Parietal Cortex

Attentional Orienting and Dorsal Visual Stream Decline: Review of Behavioral and EEG Studies

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