Eye-centered remapping of remembered visual space in human parietal cortex
Bibliographic record
Abstract
Neurophysiological evidence suggests that the monkey posterior parietal cortex represents and updates visual space in eye-centered coordinates (Duhamel et al. Science 1992; Batista et al. Science 1999). Using event-related fMRI, we investigated whether the human posterior parietal cortex employs a similar mechanism to internally update spatial representations for both eye and arm movements. We first identified a bilateral parietal region with activity related to the remembered location of a visual goal in contralateral space. We then tracked this activity while subjects viewed two sequentially flashed “goal” and “fixation” targets at randomized horizontal locations, shifted their eyes toward the fixation target, and then either looked or pointed toward the remembered location of the goal. On any given trial the goal target could be to the left or right of the fixation target. The fMRI signal was always related to the horizontal location of the remembered goal relative to gaze. When eye movements reversed the remembered horizontal goal location relative to the gaze fixation point, a dynamic shift in cortical activity from one hemisphere to the other occurred. We conclude that in the human posterior parietal cortex, spatial goals for eye and arm movements are stored and remapped in eye-centered coordinates.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".