Head Injuries – Acquired ADD?


Head Injuries Affect Attention & Focus
whether the injury was mild or severe

© Madelyn Griffith-Haynie, CTP, CMC, ACT, MCC, SCAC
from the Brain-based Coaching Series

Boing-oing-oing-oing . . . OUCH!

As long as there have been humans, there have been hits to the head. Some of them were a actually caused by those humans!

Much attention has been paid to sports-concussions and severe forms of traumatic brain injury (TBI), especially those resulting in concussions and coma.

The milder impacts, such as those from falling off a bicycle or a ladder, the jolt from a low-speed car accident or taking a weak punch in a fistfight are far more common.

These milder injuries may not entail losing consciousness — more likely to result in a slightly dazed feeling or a brief lack in responsiveness before recovering — have gotten the attention they deserve only relatively recently

They ALL damage the brain, however.

“New data suggests blows to the head are on the rise among U.S. adults and kids, but definitive diagnosis remains elusive.” ~ Scientific American Mind

Questions remain as to how long it takes to recover, to what degree and how quickly each piece of the cognitive puzzle comes back on line reliably, as well as how to identify which brain injuries are likely to recover and why some never do.

Part of the challenge in understanding these injuries is how varied they can be.  But it is no small problem.

Making things worse still, suffering even one concussion elevates the risk of suffering another and may make it all the more challenging to recover from future damage.

Here’s a scary statistic: According to an article found on the Scientific American blogsite, the average a 10-year old can experience as many as 240 hits to the head in a single football season.

Related Post: How Do Brains Get Damaged?  Is YOURS?

Troubles Often Persist

Even when a brain-scan cannot pinpoint specific areas of damage, months after a concussion patients may still have lingering symptoms, including an inability to concentrate as well as headaches — even when initial brain scans reveal nothing amiss.

Dr. Jennifer Marin, a Pediatric emergency physician at Children’s Hospital of Pittsburgh says, “Explaining the concept of cognitive rest [for recovering from injury] is difficult when you can’t show an image of how the brain has been injured.”

At the hospital, she says, “we stabilize patients but then they go home and a lot of them will experience complications down the line.”

What KIND of “complications?”

Attentional deficits and reduced speed of information processing have been found consistently, in even mild head injuries, despite lack of gross deficits in intelligence or memory (Bohnen, Jolles, Twijnstra, Mellink, & Wijnen, 1995).

These deficits are frequently the most persisting cognitive complaints (Chan, 2001).

From an article on ScienceDirect from the Archives of Clinical Neuropsychology (Volume 21, Issue 4, May 2006, Pages 293-296):

Head injury typically results in diffuse damage (not in one specific spot) that produces a reduction in information processing capacity.

This processing capacity has been broadly described as the number of operations the brain can carry out at the same time.

Individuals with mild head injury demonstrate problems when they are required to analyze or process more information than they can handle simultaneously (Gronwall, 1989).

Decreased information processing has been posited to be primarily due to problems with attention (Kay, Newman, Cavallo, Ezrachi, & Resnick, 1992; Szymanski & Linn, 1992)

In addition, fatigue and/or stress, common following head injuries, have been shown to further compromise the processing speed of those who have incurred even a mild head injury (Ewing, McCarthy, Gronwall, & Wrightson, 1980; Wood, Novack, & Long, 1984).

Related Post: ABOUT Processing Speed

Or perhaps it’s because of slowed processing speed?

Research conducted by Ponsford and Kinsella (1992) demonstrated that the difficulty in performing a sustained attention task experienced by individuals who have suffered even a mild head injury may result more from a slowed speed of processing than from attentional deficits.

Fortunately, even though the speed of performance is reduced for head-injured participants, no significant reduction exists in terms of accuracy of performance (Stuss et al., 1985).

Related Posts:
Processing slower or more to think about?
Processing Efficiency is all about Juggling

REGARDLESS of the underlying problem, the effects on behavior are very much the same as the struggles of those with a particular Executive Functioning Disorder known as Attention Deficit Disorder.

Let’s take a look at what that means.

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Pot Smoking and Developing Brains


Studies may lead to help for PTSD
as well as a greater understanding of addiction
and schizophrenia

© Madelyn Griffith-Haynie, CTP, CMC, ACT, MCC, SCAC
Foundational Concept of the Intentionality Series
Opinions vs. Facts

Reefer Madness?

Weed, Ganja, MaryJane, Cannabis, Pot, Hemp, Herb, Reefer

Some of my Senior readers may not recognize each of them, but practically any teen can tell you that they are all names for marijuana.

You know, that stuff you can roll into a joint that – except in jest – only the most out-of-it refer to as “a funny cigarette.”

The technical term for marijuana is cannabis – for a very good reason.  Since at least 1967, various chemical constituents of marijuana have been classified as cannabinoids.

They act on cannabinoid receptors in cells throughout our bodies, and alter neurotransmitter release in the brain – but they are NOT all the same.

One toke gets you higher and another makes you well?

THC [delta-9-tetrahydrocannabinol or Delta-9-THC] is the primary psychoactive ingredient in marijuana – the stuff that gets you high – but it is not always the most abundant cannabinoid in marijuana.

Depending on the particular plant, cannabidiol can be the most abundant cannabinoid, which has many healing properties that you can read about on almost any Medical Marijuana site.

Cannabidiol is currently one of the most exciting of the 85+ known cannabinoids.

Also known as CBD, it is stepping out of the shadows and into the spotlight as a potentially breakthrough nutritional component and treatment.

It occurs naturally in significant quantities in cannabis, and it is extracted relatively easily from the seeds, stalk and flowers of cannabis plants – which include hemp as well as marijuana. (The main functional difference between hemp and marijuana is the level of THC.)

Receptor Sites and Binding

All recent studies have indicated that the behavioral effects of THC are receptor mediated. That means that neurons in the brain are activated when a compound binds to its receptor — a protein typically located on the surface of a particular cell “specialized” to, metaphorically, “speak its language.”

So THC gets you high only after binding to its receptor.  That, in turn, triggers a series of events in the cell that results in a change in the cell’s activity, its gene regulation, or the signals that it sends on to another cell.

Wikipedia – ©Creative Commons

Steven R. Laviolette and his team at Western University’s Schulich School of Medicine & Dentistry discovered that directly activating cannabinoid receptors in a region of the brain called the amygdala, can strongly influence the significance of emotional information and memory processing.

PFC implications

Activating cannabinoid receptors also dramatically increased the activity patterns of neurons in a connected region of the brain called the prefrontal cortex [PFC].

That, in turn, controls how the brain perceives the emotional significance of sensory information, and the strength of the memories associated with these emotional experiences.

Regular readers may recall that the PFC has connections to, essentially, every other part of the brain.

It is the part of the cortex that allows us to regulate Executive Functions appropriately – items like planning, problem solving, concentration, mental flexibility, and controlling short-term behavior to achieve long-term goals.

The PFC is a major player for those of us with ADD and other Executive Function Disorders and dysregulations – including those with traumatic and acquired brain injuries [TBI/ABI].

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