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Related Concept Videos

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,...
Visual Agnosia01:12

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
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.
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at the...
Purposive Learning01:22

Purposive Learning

E. C. Tolman emphasized the purposiveness of behavior — the idea that much of our behavior is goal-directed. For instance, employees who aim for a promotion work diligently to meet their targets. Tolman argued that when classical conditioning and operant conditioning occur, the organism acquires certain expectations. In classical conditioning, a child might fear a dog because they expect it to bite. In operant conditioning, a person might consistently work overtime because they expect a bonus...
Observational Learning01:12

Observational Learning

Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning because...

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Related Experiment Video

Updated: Jun 23, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

Observing learned object-specific functional grasps preferentially activates the ventral stream.

Kenneth F Valyear1, Jody C Culham

  • 1Department of Psychology, Social Science Centre, University of Western Ontario, London, Canada. kvalyear@uwo.ca

Journal of Cognitive Neuroscience
|May 6, 2009
PubMed
Summary
This summary is machine-generated.

The human visual system

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Related Experiment Videos

Last Updated: Jun 23, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Visual Perception

Background:

  • The human visual system is often described as having two streams: a ventral stream for perception and a dorsal stream for action.
  • Skilled tool use likely involves the integration of both visual streams.

Purpose of the Study:

  • To investigate the neural mechanisms underlying the perception of tool use actions.
  • To determine whether typical or atypical tool grasps preferentially activate specific visual processing streams.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to scan participants viewing short movies of familiar tools.
  • Stimuli included tools grasped in ways consistent or inconsistent with typical use.
  • Analysis focused on differential activation patterns in visual processing areas.

Main Results:

  • Contrary to predictions, typical-for-use tool grasps preferentially activated areas within the ventral stream and the left posterior middle temporal gyrus.
  • These areas are not traditionally considered primary for action execution.
  • Findings suggest sensitivity to learned semantic associations in object-specific action representation.

Conclusions:

  • Learned semantic knowledge plays a crucial role in representing object-specific actions within the ventral visual stream.
  • A dynamic interplay between ventral and dorsal streams is hypothesized for actual tool use.
  • Ventral stream areas may provide essential semantic input for guiding tool engagement.