Event-related potential evidence that very slowly presented auditory stimuli are passively processed differently in younger and older adults

2021 ◽  
Vol 103 ◽  
pp. 12-21 ◽  
Author(s):  
Farooq Kamal ◽  
Cassandra Morrison ◽  
Kenneth Campbell ◽  
Vanessa Taler
Keyword(s):  
Older Adults ◽  
Event Related Potential ◽  
Auditory Stimuli

scholarly journals Event-Related Potential Measures of the Passive Processing of Rapidly and Slowly Presented Auditory Stimuli in MCI

2021 ◽  
Vol 13 ◽  
Author(s):  
Farooq Kamal ◽  
Cassandra Morrison ◽  
Kenneth Campbell ◽  
Vanessa Taler
Keyword(s):  
Older Adults ◽  
Cognitive Impairment ◽  
Auditory Stimulus ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Visual Task ◽  
Auditory Stimuli ◽  
Healthy Older Adults ◽  
Slow Condition ◽  
Related Potentials

Much research effort is currently devoted to the development of a simple, low-cost method to determine early signs of Alzheimer’s disease (AD) pathology. The present study employs a simple paradigm in which event-related potentials (ERPs) were recorded to a single auditory stimulus that was presented rapidly or very slowly while the participant was engaged in a visual task. A multi-channel EEG was recorded in 20 healthy older adults and 20 people with mild cognitive impairment (MCI). In two different conditions, a single 80 dB sound pressure level (SPL) auditory stimulus was presented every 1.5 s (fast condition) or every 12.0 s (slow condition). Participants were instructed to watch a silent video and ignore the auditory stimuli. Auditory processing thus occurred passively. When the auditory stimuli were presented rapidly (every 1.5 s), N1 and P2 amplitudes did not differ between the two groups. When the stimuli were presented very slowly, the amplitude of N1 and P2 increased in both groups and their latencies were prolonged. The amplitude of N1 did not significantly differ between the two groups. However, the subsequent positivity was reduced in people with MCI compared to healthy older adults. This late positivity in the slow condition may reflect a delayed P2 or a summation of a composite P2 + P3a. In people with MCI, the priority of processing may not be switched from the visual task to the potentially much more relevant auditory input. ERPs offer promise as a means to identify the pathology underlying cognitive impairment associated with MCI.

Reaction Time and Brain Waves in Omitted Stimulus Tasks

2010 ◽  
Vol 24 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Oscar H. Hernández ◽  
Muriel Vogel-Sprott
Keyword(s):  
Reaction Time ◽  
Cognitive Processes ◽  
Young Male ◽  
Event Related Potential ◽  
Auditory Stimuli ◽  
Motor Action ◽  
Cognitive Component ◽  
Sensory Modalities ◽  
Two Measures ◽  
Somatosensory Stimuli

A missing stimulus task requires an immediate response to the omission of a regular recurrent stimulus. The task evokes a subclass of event-related potential known as omitted stimulus potential (OSP), which reflects some cognitive processes such as expectancy. The behavioral response to a missing stimulus is referred to as omitted stimulus reaction time (RT). This total RT measure is known to include cognitive and motor components. The cognitive component (premotor RT) is measured by the time from the missing stimulus until the onset of motor action. The motor RT component is measured by the time from the onset of muscle action until the completion of the response. Previous research showed that RT is faster to auditory than to visual stimuli, and that the premotor of RT to a missing auditory stimulus is correlated with the duration of an OSP. Although this observation suggests that similar cognitive processes might underlie these two measures, no research has tested this possibility. If similar cognitive processes are involved in the premotor RT and OSP duration, these two measures should be correlated in visual and somatosensory modalities, and the premotor RT to missing auditory stimuli should be fastest. This hypothesis was tested in 17 young male volunteers who performed a missing stimulus task, who were presented with trains of auditory, visual, and somatosensory stimuli and the OSP and RT measures were recorded. The results showed that premotor RT and OSP duration were consistently related, and that both measures were shorter with respect to auditory stimuli than to visual or somatosensory stimuli. This provides the first evidence that the premotor RT is related to an attribute of the OSP in all three sensory modalities.

scholarly journals Effects of multi-domain cognitive training on working memory retrieval in older adults: behavioral and ERP evidence from a Chinese community study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiangfei Hong ◽  
You Chen ◽  
Jijun Wang ◽  
Yuan Shen ◽  
Qingwei Li ◽  
...  
Keyword(s):  
Older Adults ◽  
Working Memory ◽  
Training Program ◽  
Cognitive Training ◽  
Local Community ◽  
Training Group ◽  
Event Related Potential ◽  
Control Group ◽  
Baseline Session

AbstractWorking memory (WM) is a fundamental cognitive function that typically declines with age. Previous studies have shown that targeted WM training has the potential to improve WM performance in older adults. In the present study, we investigated whether a multi-domain cognitive training program that was not designed to specifically target WM could improve the behavioral performance and affect the neural activity during WM retrieval in healthy older adults. We assigned healthy older participants (70–78 years old) from a local community into a training group who completed a 3-month multi-domain cognitive training and a control group who only attended health education lectures during the same period. Behavioral and electroencephalography (EEG) data were recorded from participants while performing an untrained delayed match or non-match to category task and a control task at a pre-training baseline session and a post-training follow-up session. Behaviorally, we found that participants in the training group showed a trend toward greater WM performance gains than participants in the control group. Event-related potential (ERP) results suggest that the task-related modulation of P3 during WM retrieval was significantly enhanced at the follow-up session compared with the baseline session, and importantly, this enhancement of P3 modulation was only significant in the training group. Furthermore, no training-related effects were observed for the P2 or N2 component during WM retrieval. These results suggest that the multi-domain cognitive training program that was not designed to specifically target WM is a promising approach to improve WM performance in older adults, and that training-related gains in performance are likely mediated by an enhanced modulation of P3 which might reflect the process of WM updating.

The role of attention in auditory information processing as revealed by event-related potentials and other brain measures of cognitive function

1990 ◽  
Vol 13 (2) ◽  
pp. 201-233 ◽  
Author(s):  
Risto Näätänen
Keyword(s):  
Semantic Processing ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Auditory Stimuli ◽  
Stimulus Selection ◽  
Auditory Information ◽  
Attention Switching ◽  
Related Potentials ◽  
Physical Features

AbstractThis article examines the role of attention and automaticity in auditory processing as revealed by event-related potential (ERP) research. An ERP component called the mismatch negativity, generated by the brain's automatic response to changes in repetitive auditory input, reveals that physical features of auditory stimuli are fully processed whether or not they are attended. It also suggests that there exist precise neuronal representations of the physical features of recent auditory stimuli, perhaps the traces underlying acoustic sensory (“echoic”) memory. A mechanism of passive attention switching in response to changes in repetitive input is also implicated.Conscious perception of discrete acoustic stimuli might be mediated by some of the mechanisms underlying another ERP component (NI), one sensitive to stimulus onset and offset. Frequent passive attentional shifts might accountforthe effect cognitive psychologists describe as “the breakthrough of the unattended” (Broadbent 1982), that is, that even unattended stimuli may be semantically processed, without assuming automatic semantic processing or late selection in selective attention.The processing negativity supports the early-selection theory and may arise from a mechanism for selectively attending to stimuli defined by certain features. This stimulus selection occurs in the form ofa matching process in which each input is compared with the “attentional trace,” a voluntarily maintained representation of the task-relevant features of the stimulus to be attended. The attentional mechanism described might underlie the stimulus-set mode of attention proposed by Broadbent. Finally, a model of automatic and attentional processing in audition is proposed that is based mainly on the aforementioned ERP components and some other physiological measures.

Using Contextual and Visual Cues to Improve Sung Word Recognition in Hearing Aid Users

2020 ◽  
Vol 57 (4) ◽  
pp. 379-405
Author(s):  
Lindsey A Wilhelm
Keyword(s):  
Older Adults ◽  
Word Recognition ◽  
Visual Cues ◽  
Hearing Aid ◽  
Community Dwelling ◽  
Auditory Stimuli ◽  
Music Listening ◽  
Contextual Cues ◽  
Music Therapists

Abstract Older adults commonly experience hearing loss that negatively affects the quality of life and creates barriers to effective therapeutic interactions as well as music listening. Music therapists have the potential to address some needs of older adults, but the effectiveness of music interventions is dependent on the perception of spoken and musical stimuli. Nonauditory information, such as contextual (e.g., keywords, picture related to song) and visual cues (e.g., clear view of singer’s face), can improve speech perception. The purpose of this study was to examine the benefit of contextual and visual cues on sung word recognition in the presence of guitar accompaniment. The researcher tested 24 community-dwelling older adult hearing aid (HA) users recruited through a university HA clinic and laboratory under 3 study conditions: (a) auditory stimuli only, (b) auditory stimuli with contextual cues, and (c) auditory stimuli with visual cues. Both visual and contextual nonauditory cues benefited participants on sung word recognition. Participants’ music background and training were predictive of success without nonauditory cues, and visual cues provided greater benefit than contextual cues. Based on the results of this study, it is recommended that music therapists increase the accessibility of music interventions reliant upon lyric recognition through the incorporation of clear visual and contextual cues.

Sign in / Sign up

Export Citation Format

Share Document