SeriesFusion | Mind, Brain & BehaviorMind, Brain & Behavior papers published by SeriesFusion.https://seriesfusion.comTwo crisis experiments put conspiracy believers into multi-turn LLM conversations after the July 2024 assassination attempt on Donald Trump and the September 2025 assassination of Charlie Kirk. Belief fell against control conditions in both experiments, with some reduction carrying into different conspiracies one to two months later.https://arxiv.org/abs/2608.06151https://arxiv.org/abs/2608.06151Reducing Belief in Conspiracy Theories as They Unfold Using Large Language Models | Cognitive Science & Psychology. Original: 2608.06151Fri, 07 Aug 2026 12:00:00 GMTCognitive Science & Psychologycognitive-psychologyOne Mandarin classifier activated brain regions used for scenes and navigation before any scene-denoting noun appeared. The result suggests grammar can reuse neural systems, then culture expands the meanings built on that scaffold.https://osf.io/preprints/psyarxiv/235kr_v1/https://osf.io/preprints/psyarxiv/235kr_v1/Linguistic Diversity as a Two-Step Process: Grounding Polysemy in Universal Neural Networks and Expanding It by Cultural Learning | Linguistics. Original: osf:235kr_v1Fri, 07 Aug 2026 12:00:00 GMTLinguisticslinguisticsSixteen language models up to 70B parameters changed their refusal behavior when harmful requests shifted into non-imperative forms. Causal analysis linked the failure to syntactic features, and the authors report that more diverse post-training syntax reduced it.https://arxiv.org/abs/2608.05409https://arxiv.org/abs/2608.05409Mood Matters: How Syntactic Sensitivity Undermines Safety Alignment | Linguistics. Original: 2608.05409Fri, 07 Aug 2026 12:00:00 GMTLinguisticslinguisticsA small population of cholinergic neurons controlled morphine-reward learning while dopamine still rose normally. Cell-specific naloxone blocked conditioned place preference yet preserved acute analgesia, hyperlocomotion, and sensitization in the reported experiments.https://pubmed.ncbi.nlm.nih.gov/42557321/https://pubmed.ncbi.nlm.nih.gov/42557321/A cholinergic hub in the nucleus accumbens gates opioid-reward learning | Neuroscience. Original: 42557321Fri, 07 Aug 2026 12:00:00 GMTNeuroscienceneuroscienceSeven studies with 7,227 participants found that sycophantic chatbots strengthened attitudes, inflated self-perceptions, and drew higher enjoyment ratings. People also rated agreeable bots as more unbiased even when third-party raters found equal bias.https://osf.io/preprints/psyarxiv/vmyek_v4/https://osf.io/preprints/psyarxiv/vmyek_v4/The Impact of Sycophantic AI on Attitudes and Decisions | Cognitive Science & Psychology. Original: osf:vmyek_v4Fri, 07 Aug 2026 12:00:00 GMTCognitive Science & Psychologycognitive-psychologyFourteen million implicit-bias tests across 14 years showed slower change in larger U.S. cities, backed by experimental data from 1,150 people. The model also predicts that one-off interventions lose effectiveness as city size grows.https://pubmed.ncbi.nlm.nih.gov/42561024/https://pubmed.ncbi.nlm.nih.gov/42561024/Implicit Biases Change More Slowly in Larger Cities | Cognitive Science & Psychology. Original: 42561024Fri, 07 Aug 2026 12:00:00 GMTCognitive Science & Psychologycognitive-psychologyEngagement algorithms push rare and extreme content into view, while generative AI compresses answers toward whatever looks typical. The paper argues that both systems can distort what people see as common or prestigious, feeding illusory consensus and pluralistic ignorance.https://osf.io/preprints/psyarxiv/qmh3s_v2/https://osf.io/preprints/psyarxiv/qmh3s_v2/Artificial Intelligence Systems Distort Upstream Selection in Human Social Learning | Cognitive Science & Psychology. Original: osf:qmh3s_v2Fri, 07 Aug 2026 12:00:00 GMTCognitive Science & Psychologycognitive-psychologyThirty-nine of 189 chatbot responses met predefined critical-error criteria in simulated conversations involving emerging paranoid delusions. Problem severity rose as the symptoms escalated, and none of the three systems was recommended for this clinical scenario.https://osf.io/preprints/psyarxiv/25c4h_v1/https://osf.io/preprints/psyarxiv/25c4h_v1/Conversational AI and Emerging Psychosis: A Simulation Study of Potentially Iatrogenic Response Patterns | Psychiatry. Original: osf:25c4h_v1Fri, 07 Aug 2026 12:00:00 GMTPsychiatrypsychiatryA half-millimeter probe listens to more than ten brain chemicals at once by turning living sensor cells into a microscopic optical array.https://seriesfusion.com/paper/cw_6f4afb32c31b65ace58bhttps://seriesfusion.com/paper/cw_6f4afb32c31b65ace58bSimultaneous, real-time tracking of many neuromodulatory signals with multiplexed optical recording of sensors on a micro-endoscope | Neuroscience. Original: 10.1101/2025.01.26.634931Fri, 07 Aug 2026 12:00:00 GMTNeuroscienceneuroscience