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Related Experiment Video

Updated: May 19, 2026

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

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

Published on: August 1, 2018

A right visual field advantage for visual processing of manipulable objects.

Frank E Garcea¹, Jorge Almeida, Bradford Z Mahon

¹Department of Brain and Cognitive Sciences, University of Rochester, NY, USA. garcea@rcbi.rochester.edu

Cognitive, Affective & Behavioral Neuroscience

|August 7, 2012

Summary

This summary is machine-generated.

The left hemisphere

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Area of Science:

Cognitive Neuroscience
Visual Perception
Neuroscience

Background:

Object manipulation information is processed in the left parietal regions.
Visual form of tools is processed bilaterally in the ventral occipito-temporal cortex.
The impact of motor-relevant information lateralization on visual processing of manipulable objects remains unclear.

Purpose of the Study:

To investigate the right visual field (RVF) advantage in tool processing.
To determine if left-hemisphere dorsal stream lateralization affects visual object recognition.
To explore interactions between dorsal and ventral streams in object categorization.

Main Methods:

A lateralized masked priming paradigm was employed.
Tool and animal stimuli were used as targets, with identical or scrambled primes.
Experiments involved varying prime presentation locations relative to the target.

Main Results:

A significant RVF advantage was observed in priming effects for tool targets.
This RVF advantage was not found for animal targets.
Control experiments ruled out chance-level prime identification and general RVF processing speed advantages.

Conclusions:

Left-hemisphere overrepresentation of tool knowledge influences visual object recognition.
Interactions between dorsal and ventral streams are implicated in object categorization.
Lateralization of motor information impacts visual processing of tools.