Keithan Ducre

Graduated with Honors · GPA: 3.91

Co-funded by the Stanford Institute for Research in the Social Sciences as a Predoctoral Research Fellow.

Thesis: "CAUTION—Objects appear bigger than they are": The curious case of perceptual magnification.

• ·Co-leading a cross-sectional and longitudinal study examining how visual experience shapes the development of human visual cortex across childhood into adulthood, utilizing neuroimaging, eyetracking, and behavioral testing.
• ·Collecting anatomical (T1-weighted, diffusion, and qMRI) and functional MRI data to analyze the development of the ventral, dorsal, and lateral streams of vision; certified to independently conduct scans.
• ·Tracking and analyzing localized regions of interest in the dorsal stream of vision across development.
• ·Leading recruitment of participants and coordinating the study's data collection schedule.

• ·Led the data collection efforts of a psychophysics project (n=303) to examine how people perceive the visual angle of objects in natural settings.
• ·Designed novel outdoor experiments to measure the relationship between depth cues and perceived object size.
• ·Co-developed the law of perceptual magnification, a power-law model predicting perceived object size from visual angle, distance, and elevation, including the moon illusion.
• ·Authored an undergraduate honors thesis.

• ·Analyzed anatomical development in the ventral temporal cortex across the first year of life, investigating sulcal depth, volume, and thickness.

Grill-Spector, K., …, Ducre, K. (manuscript in preparation). Why does the moon look bigger on the horizon? The curious case of perceptual magnification.

Tung, S. S., …, Ducre, K., …, et al. (2026). How do infant brains fold? Sulcal deepening is linked to development of sulcal span, thickness, curvature, and microstructure. Communications Biology.

Guided an undergraduate research project examining the cross-sectional consistency of category-selective regions in the ventral visual stream. Program focused on giving underrepresented students exposure to neuroscience research.

Introduction to Psychology (PSYCH 1) — Fall 2024, Winter 2025. Introduction to Cognitive Neuroscience (PSYCH 50) — Winter 2024.

Developed and led scientific writing workshops and 1:1 tutorials with students from nontraditional backgrounds to promote equity and achievement in science communications.

Designed and taught "Brain Games: Why Optical Illusions Expose The Brain."

Guest lecture for Psych 30: Introduction to Perception, Stanford University

Guest lecture for Psych 30: Introduction to Perception, Stanford University