MT/V5 Area

About MT/V5 Organization

• Hauke Kolster,
• Ronald Peeters,
• and Guy A. Orban

The Retinotopic Organization of the Human Middle Temporal Area MT/V5 and Its Cortical NeighborsThe Journal of Neuroscience, 21 July 2010, 30(29):9801-9820;doi:10.1523/JNEUROSCI.2069-10.2010

MT/V5 in human and macaque cortex are homologous

The retinotopic organization of the human middle temporal area MT/V5 and its cortical neighbors.
Kolster H, Peeters R, Orban GA.
J Neurosci. 2010 Jul 21; 30(29):9801-20.
J Neurosci. 2010

Review Cortical connections of MT in four species of primates: areal, modular, and retinotopic patterns.
Vis Neurosci. 1990
Review Cortical connections of MT in four species of primates: areal, modular, and retinotopic patterns.
Krubitzer LA, Kaas JH. Vis Neurosci. 1990 Aug; 5(2):165-204.

MT/V5 corresponds to motion

http://web.me.com/john.tsotsos/Motion/Human_Experimental_Studies.html

Martinez-Trujillo, J.C., Cheyne, D., Gaetz, W., Simine, E., Tsotsos, J.K., Activation of area MT/V5 and the right inferior parietal cortex during the discrimination of transient direction changes in translational motion, Cerebral Cortex, 2007 Jul;17(7):1733-9. Epub 2006 Sep 29.

Martinez-Trujillo, J.C., Tsotsos, J.K., Simine, E., Pomplun, M., Wildes, R., Treue, S., Heinze, H.-J., Hopf, J.-M., Selectivity for Speed Gradients in Human Area MT/V5,NeuroReport 16(5):435-438, 2005 Apr 4.

Distinguishing subregions of the human MT+ complex using visual fields and pursuit eye movements.
J Neurophysiol. 2001
Distinguishing subregions of the human MT+ complex using visual fields and pursuit eye movements.
Dukelow SP, DeSouza JF, Culham JC, van den Berg AV, Menon RS, Vilis T. J Neurophysiol. 2001 Oct; 86(4):1991-2000.

Tactile motion activates the human middle temporal/V5 (MT/V5) complex

by Matthew C Hagen, Ove Franzen, Francis McGlone, Greg Essick, Christopher Dancer, Jose V Pardo

European Journal of Neuroscience (2002)

Volume: 16, Issue: 5, Publisher: Oxford, UK: Published on behalf of the European Neuroscience Association by Oxford University Press, c1989-, Pages: 957-964

Why Faces of Other Races Look Alike |The Brain, Memorizing & Remembering Faces | LiveScience

The brain works differently when memorizing the face of a person from one's own race than when attempting to remember the face of someone of another race, new biological evidence suggests.

The well-documented "other-race effect" finds that people are less likely to remember a face from a racial group different from their own. Northwestern University researchers set out to determine what causes this rift in perception and memory by using electroencephalogram (EEG) recordings, which measure brain activity, while participants viewed photos of various faces.

The researchers found that brain activity increases in the very first 200 to 250 milliseconds when seeing both same-race and other-race faces. Previous research has associated this very early phase, known as the N200 brain potential, with the perceptual process of individuation. That process involves making out the unique facial features of each person, such as the shape of their eyes and nose.

Read more: Why Faces of Other Races Look Alike |The Brain, Memorizing & Remembering Faces | LiveScience

Symmetry in Nature: Fundamental Fact or Human Bias? | LiveScience

DURING THE EARLY PART OF THE 20TH CENTURY, the famous Harvard mathematician George David Birkhoff developed a mathematical formula which he believed could be used to gauge how beautiful and appealing a work of art was.

Birkhoff's formula relied on two abstract concepts: complexity and order (or symmetry). According to Birkhoff, if something is complex, it will be more appealing if it is less symmetrical. Alternatively, if something is highly-symmetrical, it is better if it is less complex.

The formula seemed to make sense in theory, but there was one major problem: how to measure complexity and symmetry? Birkhoff claimed there was a way to do this, but his methods were too subjective for most people's tastes and his formula was soon forgotten.

Read more: Symmetry in Nature: Fundamental Fact or Human Bias? | LiveScience

Autistic people have better perception of symmetry: study - CTV News

MONTREAL — A new study offers a unique glimpse into the mind of autistic people, suggesting they perceive symmetry better than those who are not autistic.

While most people might look at a butterfly and admire its general beauty, for instance, an autistic person might focus on the fact the left wing is a mirror image of the right wing.

Armando Bertone thinks this difference in perception is linked to the well-known symptoms of autism -- such as fixation on specific objects.

Read more: Autistic people have better perception of symmetry: study - CTV News

A Mix of Mind Reading Devices

Mind reading is the layman term for brain computer interface. Mind reading devices tend to look interesting and unusual, from passive, insect like EEG caps with trailing wires to interactive Brain Computer Interfaces. These devices range from largely useless toys to profoundly impressive technology used to control things such as prosthetic limbs. Here is an mix of our favorites.

Read more to see various kinds of mind reading devices: A Mix of Mind Reading Devices

Gestalt principles of form perception by Mads Soegaard

Gestalt psychology attempts to understand psychological phenomena by viewing them as organised and structured wholes rather than the sum of their constituent parts. Thus, Gestalt psychology dissociates itself from the more 'elementistic'/reductionistic/decompositional approaches to psychology like structuralism (with its tendency to analyse mental processes into elementary sensations) and it accentuates concepts like emergent properties, holism, and context.
In the 30javascript:void(0)s and 40s Gestalt psychology was applied to visual perception, most notably by Max Wertheimer, Wolfgang Köhler, and Kurt Koffka who founded the so-called gestalt approaches to form perception. Their aim was to investigate the global and holistic processes involved in perceiving structure in the environment (e.g. Sternberg 1996). More specifically, they tried to explain human perception of groups of objects and how we perceive parts of objects and form whole objects on the basis of these. The investigations in this subject crystallised into "the gestalt laws of perceptual organization." Some of these laws, which are often cited in the HCI or interaction design community, are as follows....

Read more: Gestalt principles of form perception by Mads Soegaard

Targeting the Brain with Sound Waves - Technology Review

Ultrasound might provide a new, noninvasive way to control brain activity.


Ultrasound waves, currently used in medicine for prenatal scans and other diagnostic purposes, could one day be used as a noninvasive way to control brain activity. Over the past two years, scientists have begun experimenting with low-frequency, low-intensity ultrasound that can penetrate the skull and activate or silence brain cells. Researchers hope that the technology could provide an alternative to more-invasive techniques, such as deep-brain stimulation (DBS) and vagus nerve stimulation, which are used to treat a growing number of neurological disorders.

Read more:Targeting the Brain with Sound Waves - Technology Review