Ventral occipital lesions impair object recognition but not object‐directed grasping: an fMRI study

TW James, J Culham, GK Humphrey, AD Milner… - Brain, 2003 - academic.oup.com
DF, a patient with severe visual form agnosia, has been the subject of extensive research
during the past decade. The fact that she could process visual input accurately for the …

The anatomy of object recognition—visual form agnosia caused by medial occipitotemporal stroke

HO Karnath, J Rüter, A Mandler… - Journal of …, 2009 - Soc Neuroscience
The influential model on visual information processing by has suggested a dissociation
between action-and perception-related processing in a dorsal versus ventral stream …

Separate processing of texture and form in the ventral stream: evidence from FMRI and visual agnosia

C Cavina-Pratesi, RW Kentridge, CA Heywood… - Cerebral …, 2010 - academic.oup.com
Real-life visual object recognition requires the processing of more than just geometric
(shape, size, and orientation) properties. Surface properties such as color and texture are …

Visually guided grasping produces fMRI activation in dorsal but not ventral stream brain areas

JC Culham, SL Danckert, JFXD Souza, JS Gati… - Experimental brain …, 2003 - Springer
Although both reaching and grasping require transporting the hand to the object location,
only grasping also requires processing of object shape, size and orientation to preshape the …

Grasping spatial relationships: Failure to demonstrate allocentric visual coding in a patient with visual form agnosia

HC Dijkerman, AD Milner, DP Carey - Consciousness and cognition, 1998 - Elsevier
The cortical visual mechanisms involved in processing spatial relationships remain subject
to debate. According to one current view, the “dorsal stream” of visual areas, emanating from …

The two visual systems hypothesis: new challenges and insights from visual form agnosic patient DF

RL Whitwell, AD Milner, MA Goodale - Frontiers in neurology, 2014 - frontiersin.org
Patient DF, who developed visual form agnosia following carbon monoxide poisoning, is still
able to use vision to adjust the configuration of her grasping hand to the geometry of a goal …

Two cortical systems for reaching in central and peripheral vision

J Prado, S Clavagnier, H Otzenberger, C Scheiber… - Neuron, 2005 - cell.com
Parietal lesions in humans can produce a specific disruption of visually guided hand
movement, termed optic ataxia. The fact that the deficit mainly occurs in peripheral vision …

Seeing, since childhood, without ventral stream: a behavioural study

S Lê, D Cardebat, K Boulanouar, MA Hénaff, F Michel… - Brain, 2002 - academic.oup.com
We report the case of a 30‐year‐old man (SB) who developed visual agnosia following a
meningoencephalitis at the age of 3 years. MRI disclosed extensive bilateral lesions of the …

Preserved visual imagery in visual form agnosia

P Servos, MA Goodale - Neuropsychologia, 1995 - Elsevier
We investigated the ability of a patient (DF) with profound visual form agnosia to perform a
variety of tasks requiring visual imagery. Despite her inability to discriminate between …

The representation of objects in the human occipital and temporal cortex

A Ishai, LG Ungerleider, A Martin… - Journal of cognitive …, 2000 - direct.mit.edu
Recently, we identified, using fMRI, three bilateral regions in the ventral temporal cortex that
responded preferentially to faces, houses, and chairs [Ishai, A., Ungerleider, LG, Martin, A …