Wiki cleanup: error-doc removal, dedup merge, link normalization
10_Wiki/Topics 대규모 정리: - 오류 캡처/미완성 stub 문서 227개 제거 - 교차폴더 중복 43클러스터 병합 (63파일 → redirect) - 링크명 정규화: 깨진 링크 수정·redirect 직결·개념 매핑 ~2,400건 - 카테고리 MOC 6개 신규 생성 - Graph 섹션 미해결 related-keyword 링크 10,058건 제거 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Antigravity Agent
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id: wiki-2026-0508-시각-전정-충돌-visual-vestibular-confl
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title: 시각-전정 충돌 (Visual-vestibular conflict)
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category: 10_Wiki/Topics
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status: verified
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canonical_id: self
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aliases: [Visual-vestibular conflict, Sensory conflict, VR motion sickness]
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duplicate_of: none
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status: duplicate
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canonical_id: wiki-2026-0508-시각-전정-충돌-visual-vestibular-confl
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duplicate_of: "[[시각-전정 충돌(Visual-vestibular conflict)]]"
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aliases: []
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source_trust_level: A
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confidence_score: 0.9
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verification_status: applied
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tags: [vr, perception, hci, motion-sickness]
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raw_sources: []
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last_reinforced: 2026-05-10
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verification_status: redirected
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tags: [duplicate]
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last_reinforced: 2026-05-20
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github_commit: pending
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tech_stack:
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language: csharp
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framework: unity-vr
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---
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# 시각-전정 충돌 (Visual-vestibular conflict)
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## 매 한 줄
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> **"매 눈은 매 움직임을 보지만 매 inner ear 는 매 정지 상태를 보고할 때 매 brain 의 매 mismatch → motion sickness"**. Reason & Brand 의 매 1975 sensory conflict theory. 매 2026 modern VR (Quest 4, Vision Pro 2) 은 매 90+ Hz refresh, foveated rendering, locomotion comfort options 으로 매 mitigation, but 매 root cause 매 미해결.
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## 매 핵심
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### 매 vestibular system
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- **Semicircular canals**: 매 angular acceleration (회전).
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- **Otolith organs (utricle, saccule)**: 매 linear acceleration + 매 gravity.
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- **Brain integration**: 매 visual + vestibular + proprioception → 매 unified self-motion model.
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### 매 conflict types in VR
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- **Visual motion + vestibular still**: 매 cockpit / vehicle simulator → 매 cybersickness.
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- **Visual still + vestibular motion**: 매 reading in moving car → 매 carsickness.
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- **Mismatched magnitude**: 매 head-locked HUD 의 lag.
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### 매 응용
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1. VR locomotion design (teleport vs smooth).
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2. Motion-to-photon latency budget (<20ms).
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3. Vestibular adaptation training.
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## 💻 패턴
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### Comfort settings (Unity XR Toolkit)
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```csharp
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public class ComfortLocomotion : MonoBehaviour {
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[SerializeField] LocomotionMode mode = LocomotionMode.Teleport;
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[SerializeField] bool vignetteOnTurn = true;
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[SerializeField] float snapTurnAngle = 30f;
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public void Move(Vector2 input) {
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if (mode == LocomotionMode.Teleport) {
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if (input.magnitude > 0.5f) ShowTeleportArc();
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} else {
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if (vignetteOnTurn && Mathf.Abs(input.x) > 0.1f)
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vignette.intensity.value = 0.6f;
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transform.Translate(new Vector3(input.x, 0, input.y) * speed * Time.deltaTime);
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}
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}
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}
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```
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### Foveated rendering hint (OpenXR)
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```cpp
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XrFoveationLevelFB level = XR_FOVEATION_LEVEL_HIGH_FB;
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xrUpdateFoveationFB(session, &foveationProfile);
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// Reduces GPU load → enables 120Hz on mobile HMD → less conflict
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```
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### Motion-to-photon measurement
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```python
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# High-speed camera (1000fps) measuring HMD pixel response
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# vs IMU motion event timestamp
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def m2p_latency(imu_events, pixel_changes):
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paired = pair_nearest(imu_events, pixel_changes)
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return np.median([p.pixel_t - p.imu_t for p in paired])
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```
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### Snap turn (reduces conflict vs smooth turn)
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```csharp
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void OnTurnInput(float x) {
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if (Mathf.Abs(x) > 0.7f && Time.time - lastTurn > 0.3f) {
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transform.Rotate(0, Mathf.Sign(x) * 30f, 0);
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lastTurn = Time.time;
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}
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}
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```
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### Vignette during locomotion (tunneling)
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```hlsl
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// Fragment shader
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float dist = distance(uv, float2(0.5, 0.5));
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float v = smoothstep(0.3, 0.5, dist) * comfortIntensity;
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color.rgb *= 1.0 - v;
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```
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## 매 결정 기준
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| User profile | Recommended |
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|---|---|
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| 매 VR novice | Teleport + snap turn + tunneling |
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| 매 experienced | Smooth + optional comfort |
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| 매 cockpit (driving sim) | Fixed cockpit reference frame |
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| 매 spectator (seated) | Forced FoV reduction during motion |
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**기본값**: 매 teleport default + 매 snap-turn 30° + 매 tunneling on.
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> **이 문서는 [[시각-전정 충돌(Visual-vestibular conflict)]] 의 중복본입니다.** Canonical 문서로 redirect.
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## 🔗 Graph
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- 부모: [[VR/AR]] · [[Perception]]
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- 변형: [[안구 운동 기능 Oculomotor functions]]
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- 응용: [[VR Locomotion]] · [[Cybersickness Mitigation]]
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- Adjacent: [[실재감 Presence]] · [[Motion-to-photon Latency]]
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- 부모: [[시각-전정 충돌(Visual-vestibular conflict)]] (canonical)
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## 🤖 LLM 활용
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**언제**: 매 comfort design 의 trade-off 설명 / 매 user instruction 작성.
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**언제 X**: 매 medical diagnosis of vestibular disorder — 매 clinician 필수.
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## ❌ 안티패턴
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- **Forced smooth locomotion**: 매 onboarding 에서 매 novice 의 매 nausea.
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- **Low refresh rate (<72Hz)**: 매 modern HMD 매 minimum 90Hz.
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- **High latency (>30ms M2P)**: 매 conflict 매 magnify.
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- **Camera control by game (cutscene with movement)**: 매 강한 sickness inducer.
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## 🧪 검증 / 중복
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- Verified (Reason & Brand 1975 *Motion Sickness*; LaViola et al. *3D User Interfaces 2e*; Meta XR Comfort Guidelines 2025).
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- 신뢰도 A.
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## 🕓 Changelog
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## 🕓 변경 이력
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| 날짜 | 변경 |
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|---|---|
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| 2026-05-08 | Phase 1 |
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| 2026-05-10 | Manual cleanup — sensory conflict theory + Unity XR comfort 패턴 추가 |
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| 2026-05-20 | 중복 병합 — canonical 문서로 redirect |
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