Neural dynamics of reselecting visual and motor contents in working memory after external interference DOI Creative Commons
Daniela Gresch, Larissa Behnke, Freek van Ede

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Дек. 17, 2024

In everyday tasks, we must often shift our focus away from internal representations held in working memory to engage with perceptual events the external world. Here, investigated how is reestablished following an interrupting task by tracking reselection of visual and their associated action plans memory. Specifically, ask whether occurs for both motor attributes when this occurs. We developed a visual-motor working-memory which participants were retrospectively cued select one two items before being interrupted discrimination task. To determine what information was reselected, had distinct attributes. presented at three time points retro-cue. employed electroencephalography time-frequency analyses track initial selection later representations, as operationalized through modulations posterior alpha (8-12 Hz) activity relative memorized item location (visual) central beta (13-30 required response hand (motor). Our results showed that contents concurrently reselected immediately after completing task, rather than only memory-guided behavior. Thus, interruption, swiftly resume simultaneous plans, thereby restoring ready-to-use state.

Язык: Английский

Distinct functional roles of distributed cortical representations for working memory storage DOI Creative Commons
Vivien Chopurian, Simon Weber, Thomas B. Christophel

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Фев. 2, 2024

Abstract While distributed cortical areas represent working memory contents, their necessity for maintenance has been questioned. To understand whether these regions serve separable roles when multiple items are maintained, we examined the effect of visual load on neural information across regions. In each trial fMRI experiment, participants (N=81) had to memorize two items, either an orientation or a pure pitch, 13.8s and continuously recalled target after delay. We kept overall constant, but varied sensory modality item vary effective load. show that increasing decreased behavioural recall performance orientations continuous orientation-specific decodable in cortex not frontoparietal areas. Simulations this selective drop is best interpreted as mnemonic represented by patterns activity. Our results provide evidence distinct cortices, where single can be stored with high fidelity, anterior could patterns. Significance statement This study investigated role maintaining work- ing memory. find decoded low However, visual-load-dependent decline decoding accu- racy during period was only observed highlight interplay between different items.

Язык: Английский

Процитировано

2
Manipulating attentional priority creates a trade-off between memory and sensory representations in human visual cortex DOI Creative Commons
Rosanne L. Rademaker,

John T. Serences

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Сен. 16, 2024

Abstract People often remember visual information over brief delays while actively engaging with ongoing inputs from the surrounding environment. Depending on situation, one might prioritize mnemonic contents (i.e., remembering details of a past event), or preferentially attend sensory minding traffic crossing street). Previous fMRI work has shown that early regions can simultaneously represent both and passively viewed information. Here we test limits such simultaneity by manipulating attention towards distractors during working memory task performed human subjects scanning. Participants remembered orientation target grating distractor was middle portion delay. Critically, there were several subtle changes in contrast distractor, participants cued to either ignore detect change contrast, orientation. Despite stimulation being matched all three conditions, fidelity representations cortex highest when ignored, intermediate attended lowest In ignoring attending distractor-contrast, distractor-orientation. These data suggest trade-off top-down feedback seen features may partially explain failures occur are distracted external events.

Язык: Английский

Процитировано

0
Neural dynamics of reselecting visual and motor contents in working memory after external interference DOI Creative Commons
Daniela Gresch, Larissa Behnke, Freek van Ede

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Дек. 17, 2024

In everyday tasks, we must often shift our focus away from internal representations held in working memory to engage with perceptual events the external world. Here, investigated how is reestablished following an interrupting task by tracking reselection of visual and their associated action plans memory. Specifically, ask whether occurs for both motor attributes when this occurs. We developed a visual-motor working-memory which participants were retrospectively cued select one two items before being interrupted discrimination task. To determine what information was reselected, had distinct attributes. presented at three time points retro-cue. employed electroencephalography time-frequency analyses track initial selection later representations, as operationalized through modulations posterior alpha (8-12 Hz) activity relative memorized item location (visual) central beta (13-30 required response hand (motor). Our results showed that contents concurrently reselected immediately after completing task, rather than only memory-guided behavior. Thus, interruption, swiftly resume simultaneous plans, thereby restoring ready-to-use state.

Язык: Английский

Процитировано

0