- Email: [email protected]
Visual cortex: cartography, connectivity, and concurrent processing
all three targets. It also compares the active attention condition with passive reception of the same sensory stimulation. TALBOT JD, MARRETT S, EVANS AC, MEYER E, BUSHNELL MC, DUNCAN GI-I: Multiple Representations of Paiu in
Human Cerebral Cortex. Science 1991, 251:1355--1357. The first PET study to explore the pathways for pain per-
COURCHESNE E: Neuroanatomic diatrics 1991, 87:781-790.
Imaging in Autism. Pe-
a set of studies which suggest that the cerebellum is the primary and perhaps only site of pathology in autism. These results are surprising given that the patients show such severe cognitive, social, and language impairments.
Reviews
ception in the human.
TREISMANA: Search, Similarity and Integration of Features Between and Within Dimensions. J Eqb PgcboL [Hum PerceptJ 1991, 17:652-676. evidence concerning the ease of certain types of conjunction search has led to modifications in the important theory developed by the author for how visual attention serves to integrate separate features information.
New
The status of cognitive Stephen
neuroscience
by
M. Kossiyn and Lisa M. Shin
BELLIVEAU JW, KENNEDY DN, MCKINSTRY RC, BUCHBINDER BR, WEISSKOFF RM, COHEN MS, VEVEA JM, BRADY TJ, ROSEN BR: Functional Mapping of the Human Vi-
sual Cortex by Magnetic Resonance Imaging. Science Organization representation the posterior and Makoto
of space perception: neural of three-dimensional space in parietal cortex by Hideo Sakata
1!991, 254:7X%719.
A potentially revolutionary methodology is described, using MRI to track brain function.
Kusunoki
HAXBY JV, GRADY CL, HOFXITZ B, UNGERLEIDER LG, MISHKIN M, CARSON RI?:, HERXOVITCH P, SCHAPIRO MB, RAPOPORT SI: Dissociation of Object and Spatial Visual
Processing Pathways in Human Extrastriate
Cortex.
Proc Nat1 Acad Sci USA 1991, 88:1621-1625. Regional cerebral blood flow was measured by PET during a task that required the identification of a face or spatial configuration. The authors found a dissociation of object versus spatial vision in the cortex. PW, MARWALL JC: Left Neglect for Near but not Far Space in Man. Nature 1991, 350:498-500.
HALLIGAN
HINTON GE, SHALLICE T: Lesioning
work:
Investigations
of Acquired
an Attractor NetDyslexia. Psychol
Rev 1991, 98:74-95. A ‘neural network’ model is constructed, trained to ‘interpret’ word-like inputs, and then damaged. The patterns of errors following damage in some respects mirror those found in certain kinds of brain-damaged patients. Hence, the model offers potential accounts for the fmclings with patients, and provides new hypotheses that can be tested directly.
A case of right hemisphere damage including the parietal
cortex showed left hemispatial neglect in peripersonal space but not in far space.
Is the cerebellum involved in learning and cognition? by Richard 6. lvry and Juliana V. Baldo KEEIX SW, WRY R: Does the Cerebellum Provide a Common Computation for Diverse Tasks? A Timing Hypothesis. Ann N Y Acud Sci 1991, 608:179-211.
It is proposed that the cerebellum provides a temporal computation for a number of tasks. The authors argue that this hypothesis can account for deficits observed following lesions of the cerebellum in coordination, learning, and perception. DESMOND JE, MOORE JW: Altering
the Synchrony of Stimulus Trace Processes: Tests of a Neural-Network Model. Biol Cybern 1~991, 65161-170. The authors had previously presented a neural network model of the role of the cerebellum in classical conditioning. The use of modelling work is demonstrated by an experiment testing a prediction derived from the analysis of representations built into the model.
236
Visual cortex: cartography, connectivity, and concurrent processing by James J. Knierim and David
C. Van Essen
LG, DESIMONE RI Organization of Visual Inputs to the Inferior Temporal and POSterior Parietal Cortex in Macaques. J Neurosci 19!X,
BAIZER JS, UNGERWDER
11:168-190. Dual tracer injections into posterior parietal cortex and inferotemporal cortex show that the inputs to these regions are largely segregated, with only a few areas of cortex projecting to both regions.
Dou&~ RJ, MARTIN KAC: A Functional Microcircuit for Cat Visual Cortex. J Pbysiol (Land) WX, 440:735-769. Proposes a new circuit-oriented model of orientation and direction selectivity involving a combination of pasitive and negative feedback loops. Modest inhibitory influences are sufficient to generate response selectivity by preventing the activation of positive feedback loops that provide the major excitatory drive to cortical cells.
@ 1992 Current Biology
Human Cerebral Cortex. Science 1991, 251:1355--1357. The first PET study to explore the pathways for pain per-
COURCHESNE E: Neuroanatomic diatrics 1991, 87:781-790.
Imaging in Autism. Pe-
a set of studies which suggest that the cerebellum is the primary and perhaps only site of pathology in autism. These results are surprising given that the patients show such severe cognitive, social, and language impairments.
Reviews
ception in the human.
TREISMANA: Search, Similarity and Integration of Features Between and Within Dimensions. J Eqb PgcboL [Hum PerceptJ 1991, 17:652-676. evidence concerning the ease of certain types of conjunction search has led to modifications in the important theory developed by the author for how visual attention serves to integrate separate features information.
New
The status of cognitive Stephen
neuroscience
by
M. Kossiyn and Lisa M. Shin
BELLIVEAU JW, KENNEDY DN, MCKINSTRY RC, BUCHBINDER BR, WEISSKOFF RM, COHEN MS, VEVEA JM, BRADY TJ, ROSEN BR: Functional Mapping of the Human Vi-
sual Cortex by Magnetic Resonance Imaging. Science Organization representation the posterior and Makoto
of space perception: neural of three-dimensional space in parietal cortex by Hideo Sakata
1!991, 254:7X%719.
A potentially revolutionary methodology is described, using MRI to track brain function.
Kusunoki
HAXBY JV, GRADY CL, HOFXITZ B, UNGERLEIDER LG, MISHKIN M, CARSON RI?:, HERXOVITCH P, SCHAPIRO MB, RAPOPORT SI: Dissociation of Object and Spatial Visual
Processing Pathways in Human Extrastriate
Cortex.
Proc Nat1 Acad Sci USA 1991, 88:1621-1625. Regional cerebral blood flow was measured by PET during a task that required the identification of a face or spatial configuration. The authors found a dissociation of object versus spatial vision in the cortex. PW, MARWALL JC: Left Neglect for Near but not Far Space in Man. Nature 1991, 350:498-500.
HALLIGAN
HINTON GE, SHALLICE T: Lesioning
work:
Investigations
of Acquired
an Attractor NetDyslexia. Psychol
Rev 1991, 98:74-95. A ‘neural network’ model is constructed, trained to ‘interpret’ word-like inputs, and then damaged. The patterns of errors following damage in some respects mirror those found in certain kinds of brain-damaged patients. Hence, the model offers potential accounts for the fmclings with patients, and provides new hypotheses that can be tested directly.
A case of right hemisphere damage including the parietal
cortex showed left hemispatial neglect in peripersonal space but not in far space.
Is the cerebellum involved in learning and cognition? by Richard 6. lvry and Juliana V. Baldo KEEIX SW, WRY R: Does the Cerebellum Provide a Common Computation for Diverse Tasks? A Timing Hypothesis. Ann N Y Acud Sci 1991, 608:179-211.
It is proposed that the cerebellum provides a temporal computation for a number of tasks. The authors argue that this hypothesis can account for deficits observed following lesions of the cerebellum in coordination, learning, and perception. DESMOND JE, MOORE JW: Altering
the Synchrony of Stimulus Trace Processes: Tests of a Neural-Network Model. Biol Cybern 1~991, 65161-170. The authors had previously presented a neural network model of the role of the cerebellum in classical conditioning. The use of modelling work is demonstrated by an experiment testing a prediction derived from the analysis of representations built into the model.
236
Visual cortex: cartography, connectivity, and concurrent processing by James J. Knierim and David
C. Van Essen
LG, DESIMONE RI Organization of Visual Inputs to the Inferior Temporal and POSterior Parietal Cortex in Macaques. J Neurosci 19!X,
BAIZER JS, UNGERWDER
11:168-190. Dual tracer injections into posterior parietal cortex and inferotemporal cortex show that the inputs to these regions are largely segregated, with only a few areas of cortex projecting to both regions.
Dou&~ RJ, MARTIN KAC: A Functional Microcircuit for Cat Visual Cortex. J Pbysiol (Land) WX, 440:735-769. Proposes a new circuit-oriented model of orientation and direction selectivity involving a combination of pasitive and negative feedback loops. Modest inhibitory influences are sufficient to generate response selectivity by preventing the activation of positive feedback loops that provide the major excitatory drive to cortical cells.
@ 1992 Current Biology