Related Experiment Video
Updated: Sep 5, 2025
13:00
Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
10.0K
Distinctive modes of cortical communications in tactile temporal order judgment
Ali Moharramipour1,2, Toshimitsu Takahashi3, Shigeru Kitazawa1,4,5
1Dynamic Brain Network Laboratory, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan.
Cerebral Cortex (New York, N.Y. : 1991)
|July 10, 2022
Summary
Crossing hands can invert tactile order perception. This study found brain networks use low-frequency brain waves for crossed-hand tasks, while high-frequency waves aid accurate judgment, revealing distinct neural communication modes.
Area of Science:
- Neuroscience
- Sensory Perception
- Cognitive Science
Background:
- Tactile temporal order judgment (tTOS) is often reversed when hands are crossed.
- The underlying neural mechanisms and frequency-specific brain activity remain unclear.
Purpose of the Study:
- Investigate the time-frequency dynamics of cortical network interactions during the crossed-hand tTOS task.
- Identify distinct neural communication modes associated with accurate versus inverted tactile judgments.
Main Methods:
- Magnetoencephalography (MEG) was used to record brain activity.
- Analysis focused on time-frequency profiles of cortical network interactions during a tactile temporal order judgment task with uncrossed and crossed hands.
Main Results:
- Uncrossed hands showed cortical interactions in a low-frequency band (5-10 Hz).
- Crossed hands activated interactions in a higher frequency band (12-18 Hz).
- Individuals with fewer inverted judgments relied more on the higher frequency band; 'reversers' used both. Reversers showed greater high-frequency activity during correct judgments.
Conclusions:
- The cortical network employs distinct frequency modes for crossed-hand tactile temporal order judgment.
- Low-frequency communication may facilitate inverted judgments, while high-frequency engagement is crucial for accurate perception.
- Recruiting high-frequency brain activity is key for robustly correct tactile order judgments.
Related Concept Videos
01:14Motor and Sensory Areas of the Cortex
4.5K
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....
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....
4.5K
01:24Somatosensory, Motor, and Association Cortex
892
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...
892
01:11Sensory Perception: Organization of the Somatosensory System
5.5K
The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
5.5K
01:33Somatosensation
38.4K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
38.4K
01:15Sensory Modalities
1.5K
Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
1.5K
01:21Association Areas of the Cortex
6.2K
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,...
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,...
6.2K