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Related Concept Videos

Functional Brain Systems: Limbic System01:15

Functional Brain Systems: Limbic System

The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
Association Areas of the Cortex01:21

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.
Cerebral Hemispheres01:05

Cerebral Hemispheres

The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
Organization of the Brain01:30

Organization of the Brain

The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
Functional Divisions of the Nervous System01:23

Functional Divisions of the Nervous System

The nervous system, responsible for sensing, integrating, and responding to various stimuli, is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). The PNS has two functional divisions: the sensory or afferent division and the motor or efferent division.
The sensory division transmits information from sensory receptors in the body to the CNS. It provides the CNS with knowledge about somatic senses (such as tactile, thermal, pain, and proprioceptive sensations)...

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Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention
05:36

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Published on: November 16, 2017

Functional dissociations within the ventral object processing pathway: cognitive modules or a hierarchical continuum?

Rosemary A Cowell1, Timothy J Bussey, Lisa M Saksida

  • 1Psychology Department, University of California, San Diego, La Jolla, CA 92093-0109, USA. rosie.cowell@gmail.com

Journal of Cognitive Neuroscience
|November 26, 2009
PubMed
Summary
This summary is machine-generated.

This study challenges modular views of the ventral object processing pathway. A computational model explains visual discrimination deficits after lesions, suggesting a hierarchical representational continuum, not separate perception and memory systems.

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Last Updated: Jun 18, 2026

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Computational Neuroscience

Background:

  • The ventral object processing pathway is often viewed as modular, with distinct posterior regions for perception and anterior regions for memory.
  • Recent research questions this modular framework, proposing a continuous, hierarchical model of cognitive processing.

Purpose of the Study:

  • To investigate the organization and function of the ventral object processing pathway.
  • To challenge the modular view by proposing a continuous, hierarchical account of cognitive processing.
  • To provide a mechanistic explanation for lesion-induced deficits in visual discrimination.

Main Methods:

  • Utilized a computational model extending the perceptual-mnemonic feature-conjunction model.
  • Revisited and simulated data from Iwai and Mishkin's seminal study on temporal lobe lesions in monkeys.
  • Accounted for double dissociation data in visual discrimination performance.

Main Results:

  • The computational model parsimoniously explains the double dissociation data without invoking separate perception and memory systems.
  • Lesion effects on visual discrimination are attributed to compromised representations within a hierarchical continuum.
  • The model offers a single-system mechanistic account of observed deficits.

Conclusions:

  • The organization of the ventral object processing pathway is better described as a hierarchical representational continuum than a set of independent modules.
  • Focusing on stimulus representations and their cortical processing offers a more fruitful approach than mapping cognition onto functional modules.
  • This work reframes the understanding of visual perception and memory interactions within the ventral stream.