The Brain Computes Dynamic Facial Movements for Emotion Categorization Using a Third Pathway DOI Creative Commons
Yuening Yan, Jiayu Zhan,

Oliver Garrod

и другие.

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

Опубликована: Май 8, 2024

Abstract Recent theories suggest a new brain pathway dedicated to processing social movement is involved in understanding emotions from biological motion, beyond the well-known ventral and dorsal pathways. However, how this functions as network that computes dynamic motion signals for perceptual behavior unchartered. Here, we used generative model of important facial movements participants (N = 10) categorized “happy,” “surprise,” “fear,” “anger,” “disgust,” “sad” while recorded their MEG responses. Using representational interaction measures (between features, t source, behavioral responses), reveal per participant functional extending occipital cortex superior temporal gyrus. Its sources selectively represent, communicate compose disambiguate emotion categorization behavior, swiftly filters out task-irrelevant identity-defining face shape features. Our findings complex categorize individual participants.

Язык: Английский

Distributed representations of prediction error signals across the cortical hierarchy are synergistic DOI Creative Commons

Frank Gelens,

Juho Äijälä,

Louis Roberts

и другие.

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Май 10, 2024

Abstract A relevant question concerning inter-areal communication in the cortex is whether these interactions are synergistic. Synergy refers to complementary effect of multiple brain signals conveying more information than sum each isolated signal. Redundancy, on other hand, common shared between signals. Here, we dissociated cortical encoding (synergy) from those sharing (redundancy) during prediction error (PE) processing. We analyzed auditory and frontal electrocorticography (ECoG) five awake marmosets performing two distinct oddball tasks investigated what extent event-related potentials (ERP) broadband (BB) dynamics encoded synergistic redundant about PE The conveyed by ERPs BB was even at lower stages hierarchy regions. Using a brain-constrained neural network, simulated synergy redundancy observed experimental results demonstrated that emergence regions requires presence strong, long-distance, feedback, feedforward connections. These indicate distributed representations across can be highly

Язык: Английский

Процитировано

6
Pre-frontal cortex guides dimension-reducing transformations in the occipito-ventral pathway for categorization behaviors DOI Creative Commons
Yaocong Duan, Jiayu Zhan, Joachim Groß

и другие.

Current Biology, Год журнала: 2024, Номер 34(15), С. 3392 - 3404.e5

Опубликована: Июль 18, 2024

Highlights•Occipital cortex represents both task-relevant and irrelevant features before 120 ms•Only advance to the temporal region•During 121–150 ms, occipital representations reduce lower-dimensional manifolds•These manifolds then transform into from 161 350 msSummaryTo interpret our surroundings, brain uses a visual categorization process. Current theories models suggest that this process comprises hierarchy of different computations transforms complex, high-dimensional inputs (i.e., manifolds) in support multiple behaviors. Here, we tested hypothesis by analyzing these transformations reflected dynamic MEG source activity while individual participants actively categorized same stimuli according tasks: face expression, gender, pedestrian vehicle type. Results reveal three transformation stages guided pre-frontal cortex. At stage 1 (high-dimensional, 50–120 ms), sources represent task-irrelevant stimulus features; higher ventral/dorsal regions, whereas halt at occipital-temporal junction. 2 (121–150 feature manifolds, which underlying behavior over 3 (161–350 ms). Our findings shed light on how brain's network mechanisms specific behaviors.Graphical abstract

Язык: Английский

Процитировано

4
A reduced perception of sensory information is linked with elevated boredom in people with and without attention-deficit hyperactivity disorder DOI Creative Commons
Johannes P.-H. Seiler, Jonas Elpelt,

Vladimir L. Mashkov

и другие.

Communications Psychology, Год журнала: 2025, Номер 3(1)

Опубликована: Март 24, 2025

Abstract Our brains have evolved to represent and process sensory information from our environment use it guide behavior. The perception of subsequent responses, such as boredom, however, vary across situations individuals, impressively depicted by patients with attentional disorders who show extensive boredom many situations. Despite these implications, remains unclear how environmental features individual traits act together allow effective transmission information, both factors relate experience. We present a framework address this issue, exposing human participants text stimuli defined objective content, while assessing perceived sentiment. Using theory formalize external internal transmission, we find that lower predicts higher boredom. Moreover, individuals attention deficit hyperactivity disorder compared control sample. Together, delineating the interaction content traits, emerges situational consequence reduced information-decoding, heightened in ADHD.

Язык: Английский

Процитировано

0
Context‐Sensitive Conscious Interpretation and Layer‐5 Pyramidal Neurons in Multistable Perception DOI Creative Commons
Talis Bachmann

Brain and Behavior, Год журнала: 2025, Номер 15(3)

Опубликована: Март 1, 2025

There appears to be a fundamental difference between the two ways of how an object becomes perceptually experienced. One occurs when preconscious object-specifying sensory data processing crosses certain threshold so that constituents depiction become consciously The other already experienced features interpreted as belonging visual category. Surprisingly, experimental facts about neural markers conscious access gathered far do not allow us distinguish mechanisms responsible for these varieties. A cortical multicompartment layer-5 pyramidal neuron-based generic model is presented in order conceptualize possible mechanistic solution explanatory cul-de-sac. To support argument, review pertinent research compiled associated with from studies where physically invariant perceptual stimuli have underwent alternative interpretation(s) by brain. Recent developments newly emerging field cellular psycho(physio)logy are introduced, offering hypothetical distinguishing subserving content experience and interpretation. single cell-based approach brain process correlates perception added value beyond traditional inter-areal connectivity-based theoretical stances.

Язык: Английский

Процитировано

0
The Brain Computes Dynamic Facial Movements for Emotion Categorization Using a Third Pathway DOI Creative Commons
Yuening Yan, Jiayu Zhan,

Oliver Garrod

и другие.

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

Опубликована: Май 8, 2024

Abstract Recent theories suggest a new brain pathway dedicated to processing social movement is involved in understanding emotions from biological motion, beyond the well-known ventral and dorsal pathways. However, how this functions as network that computes dynamic motion signals for perceptual behavior unchartered. Here, we used generative model of important facial movements participants (N = 10) categorized “happy,” “surprise,” “fear,” “anger,” “disgust,” “sad” while recorded their MEG responses. Using representational interaction measures (between features, t source, behavioral responses), reveal per participant functional extending occipital cortex superior temporal gyrus. Its sources selectively represent, communicate compose disambiguate emotion categorization behavior, swiftly filters out task-irrelevant identity-defining face shape features. Our findings complex categorize individual participants.

Язык: Английский

Процитировано

0