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Titolo:
A CELL MODEL FOR THE DETECTION OF LOCAL IMAGE MOTION ON THE MAGNOCELLULAR PATHWAY OF THE VISUAL-CORTEX
Autore:
KAWAKAMI S; OKAMOTO H;
Indirizzi:
FUJITSU LABS LTD,1015 KAMIKODANAKA,NAKAHARA KU KAWASAKI KANAGAWA 211 JAPAN
Titolo Testata:
Vision research
fascicolo: 1, volume: 36, anno: 1996,
pagine: 117 - 147
SICI:
0042-6989(1996)36:1<117:ACMFTD>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
CAT STRIATE CORTEX; LATERAL GENICULATE-NUCLEUS; RECEPTIVE-FIELD PROPERTIES; DIRECTION-SELECTIVE NEURONS; OCULAR-DOMINANCE COLUMNS; SUPERIOR TEMPORAL SULCUS; ISO-ORIENTATION DOMAINS; RANDOM DOT PATTERNS; OPTIC FLOW STIMULI; INPUT X-CELLS;
Keywords:
CELL MODEL; IMAGE-MOTION DETECTION; HOUGH TRANSFORM; SPATIOTEMPORAL CORRELATION; MAGNOCELLULAR PATHWAY;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
132
Recensione:
Indirizzi per estratti:
Citazione:
S. Kawakami e H. Okamoto, "A CELL MODEL FOR THE DETECTION OF LOCAL IMAGE MOTION ON THE MAGNOCELLULAR PATHWAY OF THE VISUAL-CORTEX", Vision research, 36(1), 1996, pp. 117-147

Abstract

We propose that five types of cell on the magnocellular pathway of the visual cortex constitute a function hierarchy for detecting local image motion. Lateral geniculate nucleus cells and two simple cell typesanalyse one-dimensional velocities perpendicular to oriented components within a moving stimulus. Combining these velocities, a group of complex cells along a sine wave fire over the cell array. The amplitude and phase of the wave correspond to the local motion's speed and direction. A motion-detection cell in the middle temporal area then extracts the wave of activated complex cells to detect the motion. Applying Hough and inverse Hough transforms and Reichardt's spatio-temporal correlation to the hierarchy, we modeled these cell types as a series of formulas that represent the synaptic functions of neurons. The modeled cells reflect the response to various stimuli in actual cells, and explain Adelson and Movshon's two-stage hypothesis neurophysiologically. The intersection-of-constraint-lines solution of the hypothesis is equivalent to the inverse Hough transform processed in motion-detection cells. We propose tests for validating this tell model using microelectrodes and optical imaging.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 20:09:31